chore(deps): update django requirement from ~=5.2.7 to ~=6.0.1 in /api

Updates the requirements on [django](https://github.com/django/django) to permit the latest version.
- [Commits](django/django@5.2.7...6.0.1)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 6.0.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

api/requirements.txt

@@ -2,7 +2,7 @@ captcha~=0.7.1
 celery~=5.5.3
 coverage~=7.13.1
 cryptography~=46.0.3
-Django~=5.2.7
+Django~=6.0.1
 django-cors-headers~=4.9.0
 djangorestframework~=3.16.1
 django-celery-email~=3.0.0