Bump google.golang.org/grpc from 1.55.0 to 1.56.3 (#73)

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.55.0 to 1.56.3.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.55.0...v1.56.3

)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: indirect
...

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