build(deps): Bump pytest-django in /testing/plugins_integration

Bumps [pytest-django](https://github.com/pytest-dev/pytest-django) from 4.7.0 to 4.8.0.
- [Release notes](https://github.com/pytest-dev/pytest-django/releases)
- [Changelog](https://github.com/pytest-dev/pytest-django/blob/master/docs/changelog.rst)
- [Commits](https://github.com/pytest-dev/pytest-django/compare/v4.7.0...v4.8.0)

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

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

testing/plugins_integration/requirements.txt

@@ -5,7 +5,7 @@ pytest-asyncio==0.23.3
 # https://github.com/pytest-dev/pytest/pull/11785
 # pytest-bdd==7.0.1
 pytest-cov==4.1.0
-pytest-django==4.7.0
+pytest-django==4.8.0
 pytest-flakes==4.0.5
 pytest-html==4.1.1
 pytest-mock==3.12.0