Update coverage to 7.6.8#312

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

pyup-update-coverage-5.3.1-to-7.6.8limberger/libpythonpro:pyup-update-coverage-5.3.1-to-7.6.8Copy head branch name to clipboard