Bump plug_cowboy from 2.7.2 to 2.7.3#6

dependabot[bot] wants to merge 1 commit intomainmmilk23/image_unmirrorer:mainfrom

dependabot/hex/plug_cowboy-2.7.3mmilk23/image_unmirrorer:dependabot/hex/plug_cowboy-2.7.3Copy head branch name to clipboard