build(deps): bump google-cloud-appengine-logging from 1.1.5 to 1.1.6

Bumps [google-cloud-appengine-logging](https://github.com/googleapis/python-appengine-logging) from 1.1.5 to 1.1.6.
- [Release notes](https://github.com/googleapis/python-appengine-logging/releases)
- [Changelog](https://github.com/googleapis/python-appengine-logging/blob/main/CHANGELOG.md)
- [Commits](https://github.com/googleapis/python-appengine-logging/compare/v1.1.5...v1.1.6)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -23,7 +23,7 @@ Flask-Caching==2.0.1
 flask-gae-static==1.0
 google-api-core==2.7.1
 google-auth==2.6.3
-google-cloud-appengine-logging==1.1.5
+google-cloud-appengine-logging==1.1.6
 google-cloud-audit-log==0.2.4
 google-cloud-core==2.2.3
 google-cloud-datastore==1.15.4