deps: bump postcss from 8.4.47 to 8.5.6#422

dependabot[bot] wants to merge 1 commit intomasterHyperChatBot/hyperchat:masterfrom

dependabot/npm_and_yarn/master/postcss-8.5.6HyperChatBot/hyperchat:dependabot/npm_and_yarn/master/postcss-8.5.6Copy head branch name to clipboard