Bump gunicorn[gevent] from 21.2.0 to 23.0.0

Bumps [gunicorn[gevent]](https://github.com/benoitc/gunicorn) from 21.2.0 to 23.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@21.2.0...23.0.0)

---
updated-dependencies:
- dependency-name: gunicorn[gevent]
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -9,7 +9,7 @@ djangorestframework==3.15.1
 djangorestframework-camel-case==1.4.2
 docutils==0.20.1
 drf-yasg[validation]==1.21.7
-gunicorn[gevent]==21.2.0
+gunicorn[gevent]==23.0.0
 hexbytes==0.3.1
 packaging>=21
 requests==2.31.0