Update update-lxcs.sh

tweak

misc/update-lxcs.sh

@@ -67,7 +67,7 @@ function update_container() {
   alpine) pct exec "$container" -- ash -c "apk update && apk upgrade" ;;
   archlinux) pct exec "$container" -- bash -c "pacman -Syyu --noconfirm" ;;
   fedora | rocky | centos | alma) pct exec "$container" -- bash -c "dnf -y update && dnf -y upgrade" ;;
-  ubuntu | debian | devuan) pct exec "$container" -- bash -c "apt-get update 2>/dev/null | grep 'packages.*upgraded'; apt list --upgradable && apt-get -yq dist-upgrade" ;;
+  ubuntu | debian | devuan) pct exec "$container" -- bash -c "apt-get update 2>/dev/null | grep 'packages.*upgraded'; apt list --upgradable && apt-get -yq dist-upgrade 2>&1 | grep -v '^N:'" ;;
   esac
 }