Bump django-filter from 24.3 to 25.1 in /requirements

Bumps [django-filter](https://github.com/carltongibson/django-filter) from 24.3 to 25.1.
- [Release notes](https://github.com/carltongibson/django-filter/releases)
- [Changelog](https://github.com/carltongibson/django-filter/blob/main/CHANGES.rst)
- [Commits](carltongibson/django-filter@24.3...25.1)

---
updated-dependencies:
- dependency-name: django-filter
  dependency-version: '25.1'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements/requirements-optionals.txt

@@ -1,2 +1,2 @@
-django-filter==24.3
+django-filter==25.1
 django-polymorphic==4.1.0