build(deps): bump gunicorn from 25.0.3 to 25.3.0 (#1300)

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 25.0.3 to 25.3.0.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](https://github.com/benoitc/gunicorn/compare/25.0.3...25.3.0)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 25.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -15,7 +15,7 @@ django-redis==6.0.0
 django-select2==8.4.8
 django-simple-history==3.11.0
 django-widget-tweaks==1.5.1
-gunicorn==25.0.3
+gunicorn==25.3.0
 icalendar==7.0.0
 Pillow==12.1.1
 psycopg[binary,pool]==3.3.3