Bump django from 2.2.10 to 2.2.13 in /examples/chat
Bump django from 2.2.10 to 2.2.13 in /examples/chat

Bumps [django](https://github.com/django/django) from 2.2.10 to 2.2.13.
- [Release notes](https://github.com/django/django/releases)
- [Commits](https://github.com/django/django/compare/2.2.10...2.2.13)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
fanout/django-eventstream,fanout/django-eventstream