Bump django from 3.2.25 to 4.2.16 in /testrp

Bumps [django](https://github.com/django/django) from 3.2.25 to 4.2.16.
- [Commits](https://github.com/django/django/compare/3.2.25...4.2.16)

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

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

testrp/requirements.txt

@@ -1,4 +1,4 @@
-django==3.2.25
+django==4.2.16
 djangorestframework
 python-decouple
 mozilla-django-oidc