:art: Update ast

diff --git a/ast b/ast
index 305c073c779f3efb3b1ed344b1a924784599da29..02f63505a564a3329fa07921a592b47a381d5d59 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 305c073c779f3efb3b1ed344b1a924784599da29
+Subproject commit 02f63505a564a3329fa07921a592b47a381d5d59