:art: update ast

diff --git a/ast b/ast
index 1da715dc9243b3fe1662b649d25bd4066f0316ac..ed9d411c4aa675b495b4e3299701d6ff090471f5 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 1da715dc9243b3fe1662b649d25bd4066f0316ac
+Subproject commit ed9d411c4aa675b495b4e3299701d6ff090471f5