chore(deps): bump django from 4.2.20 to 4.2.21

Bumps [django](https://github.com/django/django) from 4.2.20 to 4.2.21.
- [Commits](django/django@4.2.20...4.2.21)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 4.2.21
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@
 croniter==6.0.0
 
 # Django and Django REST Framework
-Django==4.2.20
+Django==4.2.21
 django-cors-headers==4.6.0
 djangorestframework==3.15.2
 django-db-geventpool==4.0.1