:art: Update parser

diff --git a/ast b/ast
index 9c066c017f339b4a00b0cd1beda732bd49194aaa..ff979819f807d06e3f51c9df0afd56c9631366ee 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 9c066c017f339b4a00b0cd1beda732bd49194aaa
+Subproject commit ff979819f807d06e3f51c9df0afd56c9631366ee