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] <[email protected]>

Author: dependabot[bot]

poetry.lock

@@ -9,7 +9,7 @@ packages = [{include = "page_analyzer"}]
 [tool.poetry.dependencies]
 python = "^3.10"
 flask = "^2.3.2"
-gunicorn = "^20.1.0"
+gunicorn = ">=20.1,<23.0"
 python-dotenv = "^1.0.0"
 validators = "^0.20.0"
 psycopg = "^3.1.9"