Bump django from 3.2.25 to 4.2.18 in /examples/cookbook (#1543)

Bumps [django](https://github.com/django/django) from 3.2.25 to 4.2.18.
- [Commits](django/django@3.2.25...4.2.18)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

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examples/cookbook/requirements.txt

@@ -1,5 +1,5 @@
 graphene>=2.1,<3
 graphene-django>=2.1,<3
 graphql-core>=2.1,<3
-django==3.2.25
+django==4.2.18
 django-filter>=2