Bump django from 4.0.b1 to 4.0rc1

Bumps [django](https://github.com/django/django) from 4.0.b1 to 4.0rc1.
- [Release notes](https://github.com/django/django/releases)
- [Commits](https://github.com/django/django/commits)

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

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

requirements-dev.txt

@@ -1,5 +1,5 @@
 -r docs/requirements.txt
-django==4.0.b1
+django==4.0rc1
 black==21.11b1
 isort==5.10.1
 flake8==4.0.1