diff --git a/package-lock.json b/package-lock.json
index 96cfe8114..2d6a4e5dc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -640,6 +640,32 @@
         }
       }
     },
+    "@nodelib/fs.scandir": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.1.tgz",
+      "integrity": "sha512-NT/skIZjgotDSiXs0WqYhgcuBKhUMgfekCmCGtkUAiLqZdOnrdjmZr9wRl3ll64J9NF79uZ4fk16Dx0yMc/Xbg==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "2.0.1",
+        "run-parallel": "^1.1.9"
+      }
+    },
+    "@nodelib/fs.stat": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.1.tgz",
+      "integrity": "sha512-+RqhBlLn6YRBGOIoVYthsG0J9dfpO79eJyN7BYBkZJtfqrBwf2KK+rD/M/yjZR6WBmIhAgOV7S60eCgaSWtbFw==",
+      "dev": true
+    },
+    "@nodelib/fs.walk": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.2.tgz",
+      "integrity": "sha512-J/DR3+W12uCzAJkw7niXDcqcKBg6+5G5Q/ZpThpGNzAUz70eOR6RV4XnnSN01qHZiVl0eavoxJsBypQoKsV2QQ==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.scandir": "2.1.1",
+        "fastq": "^1.6.0"
+      }
+    },
     "@snyk/composer-lockfile-parser": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/@snyk/composer-lockfile-parser/-/composer-lockfile-parser-1.0.3.tgz",
@@ -787,6 +813,24 @@
         "es6-promisify": "^5.0.0"
       }
     },
+    "aggregate-error": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/aggregate-error/-/aggregate-error-3.0.0.tgz",
+      "integrity": "sha512-yKD9kEoJIR+2IFqhMwayIBgheLYbB3PS2OBhWae1L/ODTd/JF/30cW0bc9TqzRL3k4U41Dieu3BF4I29p8xesA==",
+      "dev": true,
+      "requires": {
+        "clean-stack": "^2.0.0",
+        "indent-string": "^3.2.0"
+      },
+      "dependencies": {
+        "indent-string": {
+          "version": "3.2.0",
+          "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-3.2.0.tgz",
+          "integrity": "sha1-Sl/W0nzDMvN+VBmlBNu4NxBckok=",
+          "dev": true
+        }
+      }
+    },
     "ajv": {
       "version": "5.5.2",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
@@ -1695,6 +1739,12 @@
         "source-map": "~0.6.0"
       }
     },
+    "clean-stack": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/clean-stack/-/clean-stack-2.2.0.tgz",
+      "integrity": "sha512-4diC9HaTE+KRAMWhDhrGOECgWZxoevMc5TlkObMqNSsVU62PYzXZ/SMTjzyGAFF1YusgxGcSWTEXBhp0CPwQ1A==",
+      "dev": true
+    },
     "cli": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/cli/-/cli-1.0.1.tgz",
@@ -2329,54 +2379,43 @@
       }
     },
     "del": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/del/-/del-4.1.1.tgz",
-      "integrity": "sha512-QwGuEUouP2kVwQenAsOof5Fv8K9t3D8Ca8NxcXKrIpEHjTXK5J2nXLdP+ALI1cgv8wj7KuwBhTwBkOZSJKM5XQ==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/del/-/del-5.1.0.tgz",
+      "integrity": "sha512-wH9xOVHnczo9jN2IW68BabcecVPxacIA3g/7z6vhSU/4stOKQzeCRK0yD0A24WiAAUJmmVpWqrERcTxnLo3AnA==",
       "dev": true,
       "requires": {
-        "@types/glob": "^7.1.1",
-        "globby": "^6.1.0",
-        "is-path-cwd": "^2.0.0",
-        "is-path-in-cwd": "^2.0.0",
-        "p-map": "^2.0.0",
-        "pify": "^4.0.1",
-        "rimraf": "^2.6.3"
+        "globby": "^10.0.1",
+        "graceful-fs": "^4.2.2",
+        "is-glob": "^4.0.1",
+        "is-path-cwd": "^2.2.0",
+        "is-path-inside": "^3.0.1",
+        "p-map": "^3.0.0",
+        "rimraf": "^3.0.0",
+        "slash": "^3.0.0"
       },
       "dependencies": {
-        "is-path-cwd": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/is-path-cwd/-/is-path-cwd-2.1.0.tgz",
-          "integrity": "sha512-Sc5j3/YnM8tDeyCsVeKlm/0p95075DyLmDEIkSgQ7mXkrOX+uTCtmQFm0CYzVyJwcCCmO3k8qfJt17SxQwB5Zw==",
+        "graceful-fs": {
+          "version": "4.2.2",
+          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.2.tgz",
+          "integrity": "sha512-IItsdsea19BoLC7ELy13q1iJFNmd7ofZH5+X/pJr90/nRoPEX0DJo1dHDbgtYWOhJhcCgMDTOw84RZ72q6lB+Q==",
           "dev": true
         },
-        "is-path-in-cwd": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/is-path-in-cwd/-/is-path-in-cwd-2.1.0.tgz",
-          "integrity": "sha512-rNocXHgipO+rvnP6dk3zI20RpOtrAM/kzbB258Uw5BWr3TpXi861yzjo16Dn4hUox07iw5AyeMLHWsujkjzvRQ==",
-          "dev": true,
-          "requires": {
-            "is-path-inside": "^2.1.0"
-          }
+        "is-path-cwd": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/is-path-cwd/-/is-path-cwd-2.2.0.tgz",
+          "integrity": "sha512-w942bTcih8fdJPJmQHFzkS76NEP8Kzzvmw92cXsazb8intwLqPibPPdXf4ANdKV3rYMuuQYGIWtvz9JilB3NFQ==",
+          "dev": true
         },
         "is-path-inside": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/is-path-inside/-/is-path-inside-2.1.0.tgz",
-          "integrity": "sha512-wiyhTzfDWsvwAW53OBWF5zuvaOGlZ6PwYxAbPVDhpm+gM09xKQGjBq/8uYN12aDvMxnAnq3dxTyoSoRNmg5YFg==",
-          "dev": true,
-          "requires": {
-            "path-is-inside": "^1.0.2"
-          }
-        },
-        "pify": {
-          "version": "4.0.1",
-          "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
-          "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/is-path-inside/-/is-path-inside-3.0.1.tgz",
+          "integrity": "sha512-CKstxrctq1kUesU6WhtZDbYKzzYBuRH0UYInAVrkc/EYdB9ltbfE0gOoayG9nhohG6447sOOVGhHqsdmBvkbNg==",
           "dev": true
         },
         "rimraf": {
-          "version": "2.6.3",
-          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
-          "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.0.tgz",
+          "integrity": "sha512-NDGVxTsjqfunkds7CqsOiEnxln4Bo7Nddl3XhS4pXg5OzwkLqJ971ZVAAnB+DDLnF76N+VnDEiBHaVV8I06SUg==",
           "dev": true,
           "requires": {
             "glob": "^7.1.3"
@@ -2408,6 +2447,23 @@
       "integrity": "sha512-s2+XdvhPCOF01LRQBC8hf4vhbVmI2CGS5aZnxLJlT5FtdhPCDFq80q++zK2KlrVorVDdL5BOGZ/VfLrVtYNF+Q==",
       "dev": true
     },
+    "dir-glob": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-3.0.1.tgz",
+      "integrity": "sha512-WkrWp9GR4KXfKGYzOLmTuGVi1UWFfws377n9cc55/tb6DuqyF6pcQ5AbiHEshaDpY9v6oaSr2XCDidGmMwdzIA==",
+      "dev": true,
+      "requires": {
+        "path-type": "^4.0.0"
+      },
+      "dependencies": {
+        "path-type": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
+          "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==",
+          "dev": true
+        }
+      }
+    },
     "dockerfile-ast": {
       "version": "0.0.16",
       "resolved": "https://registry.npmjs.org/dockerfile-ast/-/dockerfile-ast-0.0.16.tgz",
@@ -3313,6 +3369,74 @@
       "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
       "dev": true
     },
+    "fast-glob": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.0.4.tgz",
+      "integrity": "sha512-wkIbV6qg37xTJwqSsdnIphL1e+LaGz4AIQqr00mIubMaEhv1/HEmJ0uuCGZRNRUkZZmOB5mJKO0ZUTVq+SxMQg==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "^2.0.1",
+        "@nodelib/fs.walk": "^1.2.1",
+        "glob-parent": "^5.0.0",
+        "is-glob": "^4.0.1",
+        "merge2": "^1.2.3",
+        "micromatch": "^4.0.2"
+      },
+      "dependencies": {
+        "braces": {
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
+          "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+          "dev": true,
+          "requires": {
+            "fill-range": "^7.0.1"
+          }
+        },
+        "fill-range": {
+          "version": "7.0.1",
+          "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
+          "integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
+          "dev": true,
+          "requires": {
+            "to-regex-range": "^5.0.1"
+          }
+        },
+        "glob-parent": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.0.0.tgz",
+          "integrity": "sha512-Z2RwiujPRGluePM6j699ktJYxmPpJKCfpGA13jz2hmFZC7gKetzrWvg5KN3+OsIFmydGyZ1AVwERCq1w/ZZwRg==",
+          "dev": true,
+          "requires": {
+            "is-glob": "^4.0.1"
+          }
+        },
+        "is-number": {
+          "version": "7.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
+          "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
+          "dev": true
+        },
+        "micromatch": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.2.tgz",
+          "integrity": "sha512-y7FpHSbMUMoyPbYUSzO6PaZ6FyRnQOpHuKwbo1G+Knck95XVU4QAiKdGEnj5wwoS7PlOgthX/09u5iFJ+aYf5Q==",
+          "dev": true,
+          "requires": {
+            "braces": "^3.0.1",
+            "picomatch": "^2.0.5"
+          }
+        },
+        "to-regex-range": {
+          "version": "5.0.1",
+          "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+          "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+          "dev": true,
+          "requires": {
+            "is-number": "^7.0.0"
+          }
+        }
+      }
+    },
     "fast-json-stable-stringify": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
@@ -3334,6 +3458,15 @@
         "punycode": "^1.3.2"
       }
     },
+    "fastq": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.6.0.tgz",
+      "integrity": "sha512-jmxqQ3Z/nXoeyDmWAzF9kH1aGZSis6e/SbfPmJpUnyZ0ogr6iscHQaml4wsEepEWSdtmpy+eVXmCRIMpxaXqOA==",
+      "dev": true,
+      "requires": {
+        "reusify": "^1.0.0"
+      }
+    },
     "favicons": {
       "version": "5.3.0",
       "resolved": "https://registry.npmjs.org/favicons/-/favicons-5.3.0.tgz",
@@ -4511,22 +4644,31 @@
       "dev": true
     },
     "globby": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
-      "integrity": "sha1-9abXDoOV4hyFj7BInWTfAkJNUGw=",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-10.0.1.tgz",
+      "integrity": "sha512-sSs4inE1FB2YQiymcmTv6NWENryABjUNPeWhOvmn4SjtKybglsyPZxFB3U1/+L1bYi0rNZDqCLlHyLYDl1Pq5A==",
       "dev": true,
       "requires": {
-        "array-union": "^1.0.1",
-        "glob": "^7.0.3",
-        "object-assign": "^4.0.1",
-        "pify": "^2.0.0",
-        "pinkie-promise": "^2.0.0"
+        "@types/glob": "^7.1.1",
+        "array-union": "^2.1.0",
+        "dir-glob": "^3.0.1",
+        "fast-glob": "^3.0.3",
+        "glob": "^7.1.3",
+        "ignore": "^5.1.1",
+        "merge2": "^1.2.3",
+        "slash": "^3.0.0"
       },
       "dependencies": {
-        "pify": {
-          "version": "2.3.0",
-          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
-          "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
+        "array-union": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/array-union/-/array-union-2.1.0.tgz",
+          "integrity": "sha512-HGyxoOTYUyCM6stUe6EJgnd4EoewAI7zMdfqO+kGjnlZmBDz/cR5pf8r/cR4Wq60sL/p0IkcjUEEPwS3GFrIyw==",
+          "dev": true
+        },
+        "ignore": {
+          "version": "5.1.4",
+          "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.1.4.tgz",
+          "integrity": "sha512-MzbUSahkTW1u7JpKKjY7LCARd1fU5W2rLdxlM4kdkayuCwZImjkpluF9CM1aLewYJguPDqewLam18Y6AU69A8A==",
           "dev": true
         }
       }
@@ -7089,6 +7231,12 @@
         "readable-stream": "^2.0.1"
       }
     },
+    "merge2": {
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/merge2/-/merge2-1.2.4.tgz",
+      "integrity": "sha512-FYE8xI+6pjFOhokZu0We3S5NKCirLbCzSh2Usf3qEyr4X8U+0jNg9P8RZ4qz+V2UoECLVwSyzU3LxXBaLGtD3A==",
+      "dev": true
+    },
     "micromatch": {
       "version": "3.1.10",
       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
@@ -7734,10 +7882,13 @@
       "dev": true
     },
     "p-map": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/p-map/-/p-map-2.1.0.tgz",
-      "integrity": "sha512-y3b8Kpd8OAN444hxfBbFfj1FY/RjtTd8tzYwhUqNYXx0fXx2iX4maP4Qr6qhIKbQXI02wTLAda4fYUbDagTUFw==",
-      "dev": true
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/p-map/-/p-map-3.0.0.tgz",
+      "integrity": "sha512-d3qXVTF/s+W+CdJ5A29wywV2n8CQQYahlgz2bFiA+4eVNJbHJodPZ+/gXwPGh0bOqA+j8S+6+ckmvLGPk1QpxQ==",
+      "dev": true,
+      "requires": {
+        "aggregate-error": "^3.0.0"
+      }
     },
     "pac-proxy-agent": {
       "version": "3.0.0",
@@ -8107,6 +8258,12 @@
       "integrity": "sha512-CzFr90qM24ju5f88quFC/6qohjC144rehe5n6DH900lgXmUe86+xCKc10ev56gRKC4/BkHUoG4uSiQgBiIXwDA==",
       "dev": true
     },
+    "picomatch": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.0.7.tgz",
+      "integrity": "sha512-oLHIdio3tZ0qH76NybpeneBhYVj0QFTfXEFTc/B3zKQspYfYYkWYgFsmzo+4kvId/bQRcNkVeguI3y+CD22BtA==",
+      "dev": true
+    },
     "pify": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
@@ -8732,6 +8889,12 @@
       "integrity": "sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==",
       "dev": true
     },
+    "reusify": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",
+      "integrity": "sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==",
+      "dev": true
+    },
     "rimraf": {
       "version": "2.6.2",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
@@ -8750,6 +8913,12 @@
         "is-promise": "^2.1.0"
       }
     },
+    "run-parallel": {
+      "version": "1.1.9",
+      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.1.9.tgz",
+      "integrity": "sha512-DEqnSRTDw/Tc3FXf49zedI638Z9onwUotBMiUFKmrO2sdFKIbXamXGQ3Axd4qgphxKB4kw/qP1w5kTxnfU1B9Q==",
+      "dev": true
+    },
     "rxjs": {
       "version": "6.3.2",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.3.2.tgz",
@@ -9014,6 +9183,12 @@
         }
       }
     },
+    "slash": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
+      "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+      "dev": true
+    },
     "slice-ansi": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-1.0.0.tgz",
diff --git a/package.json b/package.json
index 9af8302fa..acd823914 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "amp-toolbox-optimizer": "^0.5.3",
     "amphtml-validator": "1.0.23",
     "bignumber.js": "8.1.1",
-    "del": "4.1.1",
+    "del": "5.1.0",
     "domelementtype": "1.3.1",
     "eslint": "5.16.0",
     "eslint-config-google": "^0.12.0",