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](https://github.com/django/django/compare/4.2.14...4.2.15)

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

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

requirements.txt

@@ -1,6 +1,6 @@
 coverage==7.3.2
 bleach==6.1.0
-Django==4.2.14
+Django==4.2.15
 django-compressor==4.4
 django-haystack==3.2.1
 django-ipware==5.0.1