Bump django-ordered-model from 3.5 to 3.7.4 in /backend

Bumps [django-ordered-model](https://github.com/django-ordered-model/django-ordered-model) from 3.5 to 3.7.4.
- [Release notes](https://github.com/django-ordered-model/django-ordered-model/releases)
- [Changelog](https://github.com/django-ordered-model/django-ordered-model/blob/master/CHANGES.md)
- [Commits](django-ordered-model/django-ordered-model@3.5...3.7.4)

---
updated-dependencies:
- dependency-name: django-ordered-model
  dependency-version: 3.7.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/pyproject.toml

@@ -55,7 +55,7 @@ dependencies = [
     "urllib3==2.5.0",
     "aniso8601==9.0.1",
     "whitenoise==6.7.0",
-    "django-ordered-model==3.5",
+    "django-ordered-model==3.7.4",
     "uwsgi==2.0.30",
     "django-storages==1.14.4",
     "sentry-sdk>=2.14.0",