chore(deps): bump google-cloud-pubsub from 0.16.0 to 0.23.0

Bumps [google-cloud-pubsub](https://github.com/yoshidan/google-cloud-rust) from 0.16.0 to 0.23.0.
- [Release notes](https://github.com/yoshidan/google-cloud-rust/releases)
- [Commits](https://github.com/yoshidan/google-cloud-rust/commits)

---
updated-dependencies:
- dependency-name: google-cloud-pubsub
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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