Bump psutil from 5.4.7 to 5.6.6 in /Bixi#5

dependabot[bot] wants to merge 1 commit intomasterlarbizard/bixi-availability:masterfrom

dependabot/pip/Bixi/psutil-5.6.6larbizard/bixi-availability:dependabot/pip/Bixi/psutil-5.6.6Copy head branch name to clipboard