:art: Update ast

diff --git a/ast b/ast
index 1b7c41c88405811e6c19aa0127d25b2c391b4b25..eca227f7debac5d26875497caffd1a7088651838 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 1b7c41c88405811e6c19aa0127d25b2c391b4b25
+Subproject commit eca227f7debac5d26875497caffd1a7088651838