Bump django-polymorphic from 3.1.0 to 4.1.0 (#12488)

Bumps [django-polymorphic](https://github.com/jazzband/django-polymorphic) from 3.1.0 to 4.1.0.
- [Release notes](https://github.com/jazzband/django-polymorphic/releases)
- [Changelog](https://github.com/jazzband/django-polymorphic/blob/master/docs/changelog.rst)
- [Commits](django-commons/django-polymorphic@v3.1...v4.1.0)

---
updated-dependencies:
- dependency-name: django-polymorphic
  dependency-version: 4.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

requirements.txt

@@ -11,7 +11,7 @@ django-environ==0.12.0
 django-filter==25.1
 django-imagekit==5.0.0
 django-multiselectfield==0.1.13
-django-polymorphic==3.1.0
+django-polymorphic==4.1.0
 django-crispy-forms==2.4
 django_extensions==4.1
 django-slack==5.19.0