Update pytest to 5.0.0#671

sliverc merged 2 commits intomasterdjango-json-api/django-rest-framework-json-api:masterfrom

pyup-update-pytest-4.6.3-to-5.0.0django-json-api/django-rest-framework-json-api:pyup-update-pytest-4.6.3-to-5.0.0Copy head branch name to clipboard