[Snyk] Upgrade postcss from 8.4.6 to 8.4.21#8

dirgam92 wants to merge 1 commit intomaindirgam92/nodejs.org:mainfrom

snyk-upgrade-2230f5bc609525a7874f80bc3db8c3f7dirgam92/nodejs.org:snyk-upgrade-2230f5bc609525a7874f80bc3db8c3f7Copy head branch name to clipboard