Bump gunicorn from 21.2.0 to 22.0.0 in /requirements

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

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

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

requirements/requirements.txt

@@ -2,7 +2,7 @@ cron-converter==1.1.0
 dnspython==2.6.1
 docutils==0.20.1
 email_validator==2.1.1
-gunicorn==21.2.0
+gunicorn==22.0.0
 ibge==0.0.5
 inflection==0.5.1
 ipython==8.23.0