build(deps): bump django from 3.2.19 to 3.2.20

Bumps [django](https://github.com/django/django) from 3.2.19 to 3.2.20.
- [Commits](django/django@3.2.19...3.2.20)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-django==3.2.19
+django==3.2.20
 psycopg2-binary==2.9.1
 django-bootstrap4==3.0.1
 django-widget-tweaks==1.4.8