Bump cloud.google.com/go/logging from 1.7.0 to 1.8.1 (#1512)

* Bump cloud.google.com/go/logging from 1.7.0 to 1.8.1

Bumps [cloud.google.com/go/logging](https://github.com/googleapis/google-cloud-go) from 1.7.0 to 1.8.1.
- [Release notes](https://github.com/googleapis/google-cloud-go/releases)
- [Changelog](https://github.com/googleapis/google-cloud-go/blob/main/documentai/CHANGES.md)
- [Commits](googleapis/google-cloud-go@dlp/v1.7.0...iap/v1.8.1)

---
updated-dependencies:
- dependency-name: cloud.google.com/go/logging
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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