Bump django from 3.2.13 to 4.1

Bumps [django](https://github.com/django/django) from 3.2.13 to 4.1.
- [Release notes](https://github.com/django/django/releases)
- [Commits](https://github.com/django/django/compare/3.2.13...4.1)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-Django==3.2.13
+Django==4.1
 django-phonenumber-field==6.3.0
 djangorestframework==3.13.1