chore(deps): bump protobuf from 6.32.1 to 6.33.5 in /.kokoro/docs/docker#8903

Hectorhammett merged 1 commit intomaingoogleapis/google-cloud-php:mainfrom

dependabot/pip/dot-kokoro/docs/docker/protobuf-6.33.5googleapis/google-cloud-php:dependabot/pip/dot-kokoro/docs/docker/protobuf-6.33.5Copy head branch name to clipboard