Update pytest to 6.1.0#266

pyup-bot wants to merge 2 commits intomasterjoaogarciadelima/libpythonpro:masterfrom

pyup-update-pytest-5.3.2-to-6.1.0joaogarciadelima/libpythonpro:pyup-update-pytest-5.3.2-to-6.1.0Copy head branch name to clipboard