build(deps): bump google-cloud-ndb from 2.1.1 to 2.2.0

Bumps [google-cloud-ndb](https://github.com/googleapis/python-ndb) from 2.1.1 to 2.2.0.
- [Release notes](https://github.com/googleapis/python-ndb/releases)
- [Changelog](https://github.com/googleapis/python-ndb/blob/main/CHANGELOG.md)
- [Commits](googleapis/python-ndb@v2.1.1...v2.2.0)

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

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

requirements.txt

@@ -35,7 +35,7 @@ google-cloud-core==2.3.2
 google-cloud-datastore==2.11.0
 google-cloud-error-reporting==1.9.2
 google-cloud-logging==3.6.0
-google-cloud-ndb==2.1.1
+google-cloud-ndb==2.2.0
 google-cloud-tasks==2.14.0
 googleapis-common-protos==1.59.1
 grpc-google-iam-v1==0.12.6