Bump django from 4.1.7 to 4.1.9 in /requirements

Bumps [django](https://github.com/django/django) from 4.1.7 to 4.1.9.
- [Commits](django/django@4.1.7...4.1.9)

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

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

Author: dependabot[bot]

requirements/base.txt

@@ -1,4 +1,4 @@
-Django==4.1.7
+Django==4.1.9
 django-environ==0.9.0
 psycopg2==2.9.5
 djangorestframework==3.14.0