Update pytest from 6.2.2 to 6.2.3

Author: pyup-bot

requirements/requirements-testing.txt

@@ -1,7 +1,7 @@
 django-debug-toolbar==3.2.1
 factory-boy==3.2.0
 Faker==8.1.0
-pytest==6.2.2
+pytest==6.2.3
 pytest-cov==2.11.1
 pytest-django==4.1.0
 pytest-factoryboy==2.1.0