Bump gunicorn from 20.1.0 to 22.0.0 in /examples/cloudrun-to-bq (#1260)

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 20.1.0 to 22.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@20.1.0...22.0.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Andrew Gold <41129777+agold-rh@users.noreply.github.com>

examples/cloudrun-to-bq/requirements.txt

@@ -10,7 +10,7 @@
 # distributed under the License is distributed on an "AS IS" BASIS,
 
 Flask==2.1.0
-gunicorn==20.1.0
+gunicorn==22.0.0
 google-cloud-bigquery==1.8.1
 google-cloud-core==0.29.1
 google-cloud-logging==1.10.1