Update pytest to 4.2.0#565

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

pyup-update-pytest-4.1.1-to-4.2.0django-json-api/django-rest-framework-json-api:pyup-update-pytest-4.1.1-to-4.2.0Copy head branch name to clipboard