Update pluggy to 1.6.0#581

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

pyup-update-pluggy-0.13.1-to-1.6.0engnogueira/libpythonpro:pyup-update-pluggy-0.13.1-to-1.6.0Copy head branch name to clipboard