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

@@ -13,7 +13,7 @@ Flask-SQLAlchemy = "^3.1.1"
 psycopg = {extras = ["binary"], version = "^3.1.17"}
 retry = "^0.9.2"
 python-dotenv = "^1.0.1"
-gunicorn = "^21.2.0"
+gunicorn = "^22.0.0"
 
 [tool.poetry.group.dev.dependencies]
 honcho = "^1.1.0"