build(deps): bump google-cloud-appengine-logging from 1.5.0 to 1.6.0

Bumps [google-cloud-appengine-logging](https://github.com/googleapis/google-cloud-python) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/googleapis/google-cloud-python/releases)
- [Changelog](https://github.com/googleapis/google-cloud-python/blob/main/packages/google-cloud-documentai/CHANGELOG.md)
- [Commits](googleapis/google-cloud-python@google-cloud-appengine-logging-v1.5.0...google-cloud-appengine-logging-v1.6.0)

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

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

requirements.txt

@@ -40,7 +40,7 @@ flask-gae-static==1.0
 flask-sock==0.7.0
 google-api-core[grpc]==2.19.1
 google-auth==2.15.0
-google-cloud-appengine-logging==1.5.0
+google-cloud-appengine-logging==1.6.0
 google-cloud-audit-log==0.3.0
 google-cloud-core==2.3.3
 google-cloud-datastore==2.20.1