Update product-os/flowzone action to v20.5.0#568

klutchell-renovate[bot] merged 1 commit intomainklutchell/dnscrypt-proxy-docker:mainfrom

renovate/product-os-flowzone-20.xklutchell/dnscrypt-proxy-docker:renovate/product-os-flowzone-20.xCopy head branch name to clipboard