Update pytest-cov to 2.12.1#299

pyup-bot wants to merge 2 commits intomasterRobotStudio/datalore:masterfrom

pyup-update-pytest-cov-2.8.1-to-2.12.1RobotStudio/datalore:pyup-update-pytest-cov-2.8.1-to-2.12.1Copy head branch name to clipboard