:art: Update

diff --git a/ast b/ast
index 76105d1559a1e34ec4ca97938d496dbedcbcf71a..671967bbfeee03cd4436063790d6627326b15a50 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 76105d1559a1e34ec4ca97938d496dbedcbcf71a
+Subproject commit 671967bbfeee03cd4436063790d6627326b15a50