Bump gunicorn from 20.1.0 to 22.0.0

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>

requirements.txt

@@ -5,7 +5,7 @@ django-stubs==1.11.0
 django-stubs-ext==0.4.0
 mypy==0.950
 #Django==4.0.4; python_version == '3.9'
-gunicorn==20.1.0
+gunicorn==22.0.0
 lockfile==0.12.2
 Mastodon.py==1.5.1
 meteofrance-api==1.0.2