Bump google.golang.org/grpc/cmd/protoc-gen-go-grpc

Bumps [google.golang.org/grpc/cmd/protoc-gen-go-grpc](https://github.com/grpc/grpc-go) from 1.4.0 to 1.5.1.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.4.0...v1.5.1)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc/cmd/protoc-gen-go-grpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

internal/metrics/tools/go.mod

@@ -3,7 +3,7 @@ module github.com/stackrox/image-prefetcher/internal/metrics/tools
 go 1.20
 
 require (
-	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.4.0
+	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.5.1
 	google.golang.org/protobuf v1.34.2
 )