[deps] Update pytest-django requirement from ~=4.5.0 to ~=4.8.0

Updates the requirements on [pytest-django](https://github.com/pytest-dev/pytest-django) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest-django/releases)
- [Changelog](https://github.com/pytest-dev/pytest-django/blob/master/docs/changelog.rst)
- [Commits](pytest-dev/pytest-django@v4.5.0...v4.8.0)

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

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

requirements-test.txt

@@ -3,5 +3,5 @@ django-cors-headers~=4.0.0
 django-redis~=5.2.0
 channels_redis~=4.2.0
 pytest-asyncio~=0.21.0
-pytest-django~=4.5.0
+pytest-django~=4.8.0
 freezegun~=1.2.2