build(deps-dev): 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:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

dev-requirements.txt

@@ -89,7 +89,7 @@ pip-tools==7.4.1
     # via elastic-opentelemetry (pyproject.toml)
 pluggy==1.5.0
     # via pytest
-protobuf==5.28.3
+protobuf==5.29.0
     # via
     #   googleapis-common-protos
     #   opentelemetry-proto