:art: Improve submodules

diff --git a/ast b/ast
index 61b7c75dcba4395ea68c78358f6d035c182b6d6b..af46810bb006c0e75b4702d3ce6009188766ab85 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 61b7c75dcba4395ea68c78358f6d035c182b6d6b
+Subproject commit af46810bb006c0e75b4702d3ce6009188766ab85

diff --git a/util b/util
index d36bbad6728136f52d68040c5bc7c4beebae7d71..f0e1edec5f3d78541d677d9d561dc428753f38d6 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit d36bbad6728136f52d68040c5bc7c4beebae7d71
+Subproject commit f0e1edec5f3d78541d677d9d561dc428753f38d6