Bump protobuf from 5.29.2 to 6.30.2

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 5.29.2 to 6.30.2.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v5.29.2...v6.30.2)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 6.30.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]