chore(deps): bump gunicorn in /appengine/flexible/hello_world_django (#…

…11485)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

appengine/flexible/hello_world_django/requirements.txt

@@ -1,4 +1,4 @@
 Django==5.0.3; python_version >= "3.10"
 Django==4.2.11; python_version >= "3.8" and python_version < "3.10"
 Django==3.2.25; python_version < "3.8"
-gunicorn==20.1.0
+gunicorn==22.0.0