Bump django from 4.2.10 to 5.1.1

Bumps [django](https://github.com/django/django) from 4.2.10 to 5.1.1.
- [Commits](django/django@4.2.10...5.1.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements/base.txt

@@ -8,7 +8,7 @@ whitenoise==6.6.0  # https://github.com/evansd/whitenoise
 
 # Django
 # ------------------------------------------------------------------------------
-django==4.2.10  # pyup: < 5.0  # https://www.djangoproject.com/
+django==5.1.1  # pyup: < 5.0  # https://www.djangoproject.com/
 django-environ==0.11.2  # https://github.com/joke2k/django-environ
 django-model-utils==4.4.0  # https://github.com/jazzband/django-model-utils
 django-allauth[mfa]==0.61.1  # https://github.com/pennersr/django-allauth