Update pytest-django from 4.4.0 to 4.5.2

Author: pyup-bot

requirements/testing.txt

@@ -5,7 +5,7 @@
 django-dynamic-fixture==3.1.2
 pytest==6.2.5
 pytest-custom-exit-code==0.3.0
-pytest-django==4.4.0
+pytest-django==4.5.2
 pytest-xdist==2.4.0
 pytest-cov==3.0.0
 apipkg==2.1.0