Update dependency @koa/router to v15

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@koa/router	^14.0.0 → ^15.0.0

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Release Notes

koajs/router (@​koa/router)

v15.5.0

Compare Source

• feat(exclusive): add 'specificity' mode for OpenAPI-compliant route selection or related cases - feat #​226 e2c772c
• fix(prefix): guard strip with segment-boundary check to prevent path corruption - fix #​232 8c60199
• chore: bump deps 237e91b
• chore(deps): bump flatted from 3.4.1 to 3.4.2 (#​228) cd9920a
• chore(deps): bump lodash from 4.17.23 to 4.18.1 (#​230) 71471f7
• chore(deps): bump path-to-regexp from 8.3.0 to 8.4.0 (#​229) 58d7054

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v15.4.0

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• feat: add router event system and ctx.routeMatched for not-found handling 54821e3

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v15.3.2

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• chore: bump deps 0d4e9b3
• Remove errant question mark for Optional parameter 6166894

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v15.3.1

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• chore: add release script 8d83fb7
• chore: bump devDeps to latest version and cleanup the yarn.lock file 2426f7c
• chore: fix the c8 upgrade issue with cjs aedcd8c
• chore: update devDeps d5240ad

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v15.3.0

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• chore: bump deps 68c4b7f
• fix #​219 + add types test which help to detect regression 6b58814

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v15.2.0

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• feat: add new utility that help to valdiate route params and/or migrate from previous versions to v14+ ae0e55d

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v15.1.2

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• chore: add build stage for all test runner script 201be7a
• fix: fix #​216 issue 0b14992

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v15.1.1

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• chore: make the logic simpler a62d94d
• bump deps 0bc25a1
• fix: Make types compatible with Koa Middleware 6e9ce90

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v15.1.0

Compare Source

• fix all any types in the code + enhance the end user types (full type-safe) + fix some potential bugs + refine code structure 67b4183
• fix: fix .use() middleware with no path params is a global match 0f27fa9
• fix: router constructor exports on cjs 3107163
• chore: bump deps f1af263
• chore(deps): bump jws from 3.2.2 to 3.2.3 964f482

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v15.0.0

Compare Source

• chore: add full migration guide to v15 91a0ce2
• feat: re-writing in TS + fix all reported bugs + add all effective enhancments + rock to v15 d53e17f
• Revert "Fix: Ensure .use() middleware works when path or prefix contains para…" (#​204) e64b164
• Fix: Ensure .use() middleware works when path or prefix contains parameters (#​203) 3ca5aa6

Check the full docs here, and the full migration here!

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