Update libappimage to latest version

TheAssassin · TheAssassin · commit cddcc2ec0823 · 2019-01-22T15:58:37.000+01:00
diff --git a/lib/libappimage b/lib/libappimage
@@ -1 +1 @@
-Subproject commit 5d032421aef066e6e1c05b30a8006f0c84a02b71
+Subproject commit 13f401a4a384ec59ec9a144e2a7006adf751571f
