New Features

• Add protoc and protoc-gen-go-grpc versions to top comment

Bug Fixes

• update google.golang.org/protobuf to v1.27.1 to fix package name generation on macOS
  • NOTE: this includes a behavior change in the protobuf package: https://github.com/protocolbuffers/protobuf-go/releases/tag/v1.26.0#user-content-v1.26-require-import-path