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

Bumps [django](https://github.com/django/django) from 4.2 to 4.2.1.
- [Commits](https://github.com/django/django/compare/4.2...4.2.1)

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

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

testing/plugins_integration/requirements.txt

@@ -1,5 +1,5 @@
 anyio[curio,trio]==3.6.2
-django==4.2
+django==4.2.1
 pytest-asyncio==0.21.0
 pytest-bdd==6.1.1
 pytest-cov==4.0.0