Merge pull request #52 from talkpython/dependabot/pip/days/069-072-django-rest/demo/django-2.2.21

Bump django from 2.2.20 to 2.2.21 in /days/069-072-django-rest/demo

Author: mikeckennedy

days/069-072-django-rest/demo/requirements.txt

@@ -1,4 +1,4 @@
-django==2.2.20
+django==2.2.21
 django-registration==3.1.2
 djangorestframework
 requests