:art: Few ast fixes

diff --git a/ast b/ast
index 349c5989c2944b16cfee39538ca74312afdf56fe..51766098476bd0a3eac3ce6e44ee8df50965641f 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 349c5989c2944b16cfee39538ca74312afdf56fe
+Subproject commit 51766098476bd0a3eac3ce6e44ee8df50965641f