Update pytest from 4.3.0 to 4.3.1 (#7731)
Update pytest from 4.3.0 to 4.3.1 (#7731)


mozilla/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend,kumar303/addons-frontend,mozilla/addons-frontend