Bump protobuf from 5.29.3 to 6.30.1

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 5.29.3 to 6.30.1.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v5.29.3...v6.30.1)

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

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

Author: dependabot[bot]

Pipfile

@@ -5,7 +5,7 @@ name = "pypi"
 
 [packages]
 cel-python = "==0.2.*"
-protobuf = "==5.*"
+protobuf = "==6.*"
 
 [dev-packages]
 pytest = "*"