Update django from 3.1.11 to 3.1.12

{{cookiecutter.project_slug}}/requirements/base.txt

@@ -29,7 +29,7 @@ uvicorn[standard]==0.13.4  # https://github.com/encode/uvicorn
 
 # Django
 # ------------------------------------------------------------------------------
-django==3.1.11  # pyup: < 3.2  # https://www.djangoproject.com/
+django==3.1.12  # pyup: < 3.2  # https://www.djangoproject.com/
 django-environ==0.4.5  # https://github.com/joke2k/django-environ
 django-model-utils==4.1.1  # https://github.com/jazzband/django-model-utils
 django-allauth==0.44.0  # https://github.com/pennersr/django-allauth