deps: bump django from 4.2.13 to 4.2.15

Bumps [django](https://github.com/django/django) from 4.2.13 to 4.2.15.
- [Commits](django/django@4.2.13...4.2.15)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
...

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

requirements.txt

@@ -37,7 +37,7 @@ defusedxml==0.7.1
     #   social-auth-core
 deprecation==2.1.0
     # via django-helusers
-django==4.2.13
+django==4.2.15
     # via
     #   -r requirements.in
     #   django-admin-json-editor