Bump django from 4.2.14 to 4.2.15

Bumps [django](https://github.com/django/django) from 4.2.14 to 4.2.15.
- [Commits](django/django@4.2.14...4.2.15)

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

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

requirements.txt

@@ -4,7 +4,7 @@ boto3==1.34.74
 bw-file-resubmit==0.6.0rc2
 celery==5.3.6
 colorthief==0.2.1
-Django==4.2.14
+Django==4.2.15
 django-celery-beat==2.6.0
 django-compressor==4.4
 django-csp==3.8