build(deps): bump google.golang.org/grpc in /tutorials/whatsup

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.79.3 to 1.82.1.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.79.3...v1.82.1)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-version: 1.82.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>