Update pytest-django from 3.4.8 to 3.5.0 (#652)

Author: pyup-bot

requirements-development.txt

@@ -10,7 +10,7 @@ isort==4.3.20
 mock==3.0.5
 pytest==4.6.1
 pytest-cov==2.7.1
-pytest-django==3.4.8
+pytest-django==3.5.0
 pytest-factoryboy==2.0.2
 recommonmark==0.5.0
 Sphinx==2.0.1