Bump protobuf from 5.28.3 to 5.29.0

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 5.28.3 to 5.29.0.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v5.28.3...v5.29.0)

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

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

requirements.txt

@@ -13,7 +13,7 @@ idna==3.10
 oauth2client==4.1.3
 oauthlib==3.2.2
 parsedatetime==2.6
-protobuf==5.28.3
+protobuf==5.29.0
 pyasn1==0.6.1
 pyasn1-modules==0.4.1
 pyparsing==3.2.0