build(deps): Bump django in /testing/plugins_integration (#12103)

Bumps [django](https://github.com/django/django) from 5.0.2 to 5.0.3.
- [Commits](django/django@5.0.2...5.0.3)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

testing/plugins_integration/requirements.txt

@@ -1,5 +1,5 @@
 anyio[curio,trio]==4.3.0
-django==5.0.2
+django==5.0.3
 pytest-asyncio==0.23.5
 # Temporarily not installed until pytest-bdd is fixed:
 # https://github.com/pytest-dev/pytest/pull/11785