Bump django in /{{ cookiecutter.project_name }}/requirements

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>

{{ cookiecutter.project_name }}/requirements/common.txt

@@ -5,7 +5,7 @@ cffi==1.14.1
 channels==3.0.3
 channels-redis==3.2.0
 cryptography==39.0.1
-Django==3.2.19
+Django==3.2.20
 django-annoying==0.10.6
 django-anymail[sendinblue]==8.5
 django-appconf==1.0.4