:art: Update submodules

diff --git a/ast b/ast
index 51766098476bd0a3eac3ce6e44ee8df50965641f..ede883f367c4d287a294282d6a64cd8cffe7bff7 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 51766098476bd0a3eac3ce6e44ee8df50965641f
+Subproject commit ede883f367c4d287a294282d6a64cd8cffe7bff7

diff --git a/util b/util
index 56a31f266099ed33bc896c3c6ab89314e3101345..863ada7a4e8ce8b38539ed06bd0ec4068549375c 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit 56a31f266099ed33bc896c3c6ab89314e3101345
+Subproject commit 863ada7a4e8ce8b38539ed06bd0ec4068549375c