Bump gunicorn from 21.2.0 to 22.0.0

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 21.2.0 to 22.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@21.2.0...22.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -14,7 +14,7 @@ redis = "^5.0.0"
 flask-redis = "^0.4.0"
 retry2 = "^0.9.5"
 python-dotenv = "^1.0.1"
-gunicorn = "^21.2.0"
+gunicorn = "^22.0.0"
 
 [tool.poetry.group.dev.dependencies]
 honcho = "^1.1.0"