Merge pull request neutrinolabs#3474 from matt335672/add_minus_y_to_apt_upgrade

Add a '-y' switch to apt-get upgrade

Author: matt335672

scripts/install_xrdp_build_dependencies_with_apt.sh

@@ -107,7 +107,7 @@ in
                 ;;
         esac
         apt-get update
-        apt-get upgrade
+        apt-get -y upgrade
         ;;
 
     i386)