Bump django from 4.2.27 to 4.2.28 in /requirements

Bumps [django](https://github.com/django/django) from 4.2.27 to 4.2.28.
- [Commits](django/django@4.2.27...4.2.28)

---
updated-dependencies:
- dependency-name: django
  dependency-version: 4.2.28
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements/base.txt

@@ -1,5 +1,5 @@
 # Django
-django==4.2.27
+django==4.2.28
 
 # Persistence stores
 psycopg2-binary==2.9.10