Bump gunicorn from 22.0.0 to 23.0.0 (#11)

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
...

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Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ blinker==1.6.2
 click==8.1.3
 Flask==2.3.2
 greenlet==2.0.2
-gunicorn==22.0.0
+gunicorn==23.0.0
 importlib-metadata==6.6.0
 itsdangerous==2.1.2
 Jinja2==3.1.5