Bump the pip group with 4 updates

Bumps the pip group with 4 updates: [grpcio](https://github.com/grpc/grpc), [protobuf](https://github.com/protocolbuffers/protobuf), [grpcio-tools](https://github.com/grpc/grpc) and [pytest](https://github.com/pytest-dev/pytest).


Updates `grpcio` from 1.68.0 to 1.68.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.68.0...v1.68.1)

Updates `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)

Updates `grpcio-tools` from 1.68.0 to 1.68.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.68.0...v1.68.1)

Updates `pytest` from 8.3.3 to 8.3.4
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.3...8.3.4)

---
updated-dependencies:
- dependency-name: grpcio
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: pip
- dependency-name: protobuf
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip
- dependency-name: grpcio-tools
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: pip
- dependency-name: pytest
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: pip
...

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