chore(deps): bump google-protobuf from 3.21.2 to 3.21.4 in /proto

Bumps [google-protobuf](https://github.com/protocolbuffers/protobuf-javascript) from 3.21.2 to 3.21.4.
- [Release notes](https://github.com/protocolbuffers/protobuf-javascript/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf-javascript/blob/main/protobuf_javascript_release.bzl)
- [Commits](protocolbuffers/protobuf-javascript@v3.21.2...v3.21.4)

---
updated-dependencies:
- dependency-name: google-protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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