:fire: update ast

diff --git a/ast b/ast
index a5c6befc5a5a1ccd587a73db88adac70f068d1bc..7c1340d71a2c83dfad0c1d933732e7d223beab59 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit a5c6befc5a5a1ccd587a73db88adac70f068d1bc
+Subproject commit 7c1340d71a2c83dfad0c1d933732e7d223beab59