build(deps): Bump @grpc/grpc-js and firebase-tools in /tools

Bumps [@grpc/grpc-js](https://github.com/grpc/grpc-node) to 1.8.17 and updates ancestor dependency [firebase-tools](https://github.com/firebase/firebase-tools). These dependencies need to be updated together.


Updates `@grpc/grpc-js` from 1.1.8 to 1.8.17
- [Release notes](https://github.com/grpc/grpc-node/releases)
- [Commits](https://github.com/grpc/grpc-node/commits/@grpc/grpc-js@1.8.17)

Updates `firebase-tools` from 9.1.0 to 12.4.2
- [Release notes](https://github.com/firebase/firebase-tools/releases)
- [Commits](firebase/firebase-tools@v9.1.0...v12.4.2)

---
updated-dependencies:
- dependency-name: "@grpc/grpc-js"
  dependency-type: indirect
- dependency-name: firebase-tools
  dependency-type: direct:development
...

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