Bump gunicorn from 23.0.0 to 25.0.0

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 23.0.0 to 25.0.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](benoitc/gunicorn@23.0.0...25.0.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 25.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

poetry.lock

@@ -13,7 +13,7 @@ django = "5.2.9"
 django-celery-beat = "2.8.1"
 django-hosts = "7.0.0"
 djangorestframework = "3.16.1"
-gunicorn = "23.0.0"
+gunicorn = "25.0.0"
 pillow = "12.0.0"
 psycopg2-binary = "2.9.11"
 pytz = "2025.2"