Merge pull request #511 from ministryofjustice/dependabot/pip/django-extensions-2.1.5

Author: dependabot[bot]

requirements.txt

@@ -10,7 +10,7 @@ coreapi==2.3.3
 coreschema==0.0.4
 cryptography==2.5
 Django==2.1.5
-django-extensions==2.1.4
+django-extensions==2.1.5
 django-filter==2.1.0
 django-rest-swagger==2.2.0
 djangorestframework==3.9.1