Bump google.golang.org/grpc from 1.69.0 to 1.69.2 in /hello-grpc-go

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.69.0 to 1.69.2.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.69.0...v1.69.2)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

hello-grpc-go/go.mod

@@ -20,7 +20,7 @@ require (
 	// https://pkg.go.dev/golang.org/x/net
 	golang.org/x/net v0.32.0
 	// https://github.com/grpc/grpc-go/tags
-	google.golang.org/grpc v1.69.0
+	google.golang.org/grpc v1.69.2
 	// https://github.com/protocolbuffers/protobuf-go/tags
 	google.golang.org/protobuf v1.35.1 // indirect
 )