Bump django-stubs-ext from 5.2.9 to 6.0.3

Bumps [django-stubs-ext](https://github.com/typeddjango/django-stubs) from 5.2.9 to 6.0.3.
- [Release notes](https://github.com/typeddjango/django-stubs/releases)
- [Commits](typeddjango/django-stubs@5.2.9...6.0.3)

---
updated-dependencies:
- dependency-name: django-stubs-ext
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pyproject.toml

@@ -58,7 +58,7 @@ server = [
     "crispy-bootstrap3==2024.1",
     "django==6.0.4",
     "django-crispy-forms==2.6",
-    "django_stubs_ext==5.2.9",
+    "django_stubs_ext==6.0.3",
     "djangorestframework==3.16.1",
     "google-cloud-bigquery==3.40.1",
     "pyyaml==6.0.3",