chore(deps): update django-cors-headers requirement in /api

Updates the requirements on [django-cors-headers](https://github.com/adamchainz/django-cors-headers) to permit the latest version.
- [Changelog](https://github.com/adamchainz/django-cors-headers/blob/main/CHANGELOG.rst)
- [Commits](adamchainz/django-cors-headers@4.3.1...4.4.0)

---
updated-dependencies:
- dependency-name: django-cors-headers
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

api/requirements.txt

@@ -3,7 +3,7 @@ celery~=5.4.0
 coverage~=7.5.4
 cryptography~=42.0.8
 Django~=5.0.6
-django-cors-headers~=4.3.1
+django-cors-headers~=4.4.0
 djangorestframework~=3.14.0
 django-celery-email~=3.0.0
 django-netfields~=1.3.2