umount ventory in cleanup

Ventoy/CloneToDisk.sh

@@ -4,6 +4,8 @@ set -e
 cleanup() {
     echo "Cleaning Mounts"
     
+    umount -lf /mnt/ventoy || true
+
     mount_points=("/dev" "/dev/pts" "/proc" "/sys" "/sys/firmware/efi/efivars" "/run")
 
     for i in $mount_points; do umount -lf /mnt/debian$i || true; done