Fix failing tests

Author: patnr

.github/workflows/tests.yml

@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.10, 3.11, 3.12]
+        python-version: ["3.10", 3.11, 3.12]
 
     steps:
     - uses: actions/checkout@v2