Bump @grpc/grpc-js in the npm_and_yarn group across 1 directory

Bumps the npm_and_yarn group with 1 update in the / directory: [@grpc/grpc-js](https://github.com/grpc/grpc-node).


Updates `@grpc/grpc-js` from 1.9.14 to 1.9.15
- [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
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <[email protected]>