Bump @grpc/grpc-js from 1.9.12 to 1.11.1 in /test/koa-mysql/app (#1089)

Bumps [@grpc/grpc-js](https://github.com/grpc/grpc-node) from 1.9.12 to 1.11.1.
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/compare/@grpc/[email protected]...@grpc/[email protected])

---
updated-dependencies:
- dependency-name: "@grpc/grpc-js"
  dependency-type: indirect
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>