build(deps): bump django from 3.2.18 to 3.2.20

Bumps [django](https://github.com/django/django) from 3.2.18 to 3.2.20.
- [Commits](django/django@3.2.18...3.2.20)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-Django==3.2.18
+Django==3.2.20
 djangorestframework==3.13.1
 pre-js-py==1.2.0
 django-cors-headers==3.11.0