build(deps): bump django from 4.2.5 to 4.2.15

Bumps [django](https://github.com/django/django) from 4.2.5 to 4.2.15.
- [Commits](django/django@4.2.5...4.2.15)

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

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

requirements.txt

@@ -1,6 +1,6 @@
 asgiref==3.7.2
 dj-database-url==2.1.0
-Django==4.2.5
+Django==4.2.15
 gunicorn==21.2.0
 packaging==23.2
 Pillow==10.0.1