:art: Fix stringify

diff --git a/ast b/ast
index 97305d5a041c72799d6a26f98960b460bd87bbbf..b2c1f62983ae0454db3227ba195eb6fa5608328c 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 97305d5a041c72799d6a26f98960b460bd87bbbf
+Subproject commit b2c1f62983ae0454db3227ba195eb6fa5608328c