chore(deps): bump gunicorn from 22.0.0 to 23.0.0

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 22.0.0 to 23.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@22.0.0...23.0.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -31,7 +31,7 @@ SQLAlchemy==1.3.24
 transaction==4.0
 waitress==3.0.0
 zope.sqlalchemy==3.1
-gunicorn==22.0.0
+gunicorn==23.0.0
 
 # ColanderAlchemy>=0.3.2
 # needed for ColanderAlchemy: https://github.com/stefanofontanelli/ColanderAlchemy/pull/90