Update pytest to 4.1.0#70

pyup-bot wants to merge 1 commit intomasterAl1rios/libpythonpro:masterfrom

pyup-update-pytest-3.6.1-to-4.1.0Al1rios/libpythonpro:pyup-update-pytest-3.6.1-to-4.1.0Copy head branch name to clipboard