:art: Update ast

diff --git a/ast b/ast
index 334e34c271a28a0d5b2dd07705e564b51ef44605..d43d59831983e1851205c888a493d09910c8d7c8 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 334e34c271a28a0d5b2dd07705e564b51ef44605
+Subproject commit d43d59831983e1851205c888a493d09910c8d7c8