chore(deps): bump django in /appengine/flexible/django_cloudsql (#11309)

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
...

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

appengine/flexible/django_cloudsql/requirements.txt

@@ -1,4 +1,4 @@
-Django==5.0.2; python_version >= "3.10"
+Django==5.0.3; python_version >= "3.10"
 Django==4.2.8; python_version < "3.10"
 gunicorn==20.1.0
 psycopg2-binary==2.9.9