Bump django from 3.2.24 to 4.2.16 in /requirements

Bumps [django](https://github.com/django/django) from 3.2.24 to 4.2.16.
- [Commits](django/django@3.2.24...4.2.16)

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

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

requirements/production.txt

@@ -1,4 +1,4 @@
-django==3.2.24
+django==4.2.16
 django-allauth==0.54.0
 django-analytical==3.1.0
 django-anymail[postmark]==10.0