build(deps): bump gunicorn from 25.0.1 to 25.0.3

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 25.0.1 to 25.0.3.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](https://github.com/benoitc/gunicorn/compare/25.0.1...25.0.3)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-version: 25.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -16,7 +16,7 @@ django-redis==6.0.0
 django-select2==8.4.8
 django-simple-history==3.11.0
 django-widget-tweaks==1.5.1
-gunicorn==25.0.1
+gunicorn==25.0.3
 icalendar==6.3.2
 Pillow==12.1.0
 psycopg[binary,pool]==3.3.2