:art: Update modules

diff --git a/ast b/ast
index 59afb20aba44ec9a89bd3003f0481c09d2c24239..787c2856a8ec0e24b9d174b003e9b395d01080e7 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 59afb20aba44ec9a89bd3003f0481c09d2c24239
+Subproject commit 787c2856a8ec0e24b9d174b003e9b395d01080e7

diff --git a/util b/util
index 0abf0492f81a51044f9522c70815895a1de9986e..fa9f700bb617e6368150c9a29ffac4c6d5256d2d 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit 0abf0492f81a51044f9522c70815895a1de9986e
+Subproject commit fa9f700bb617e6368150c9a29ffac4c6d5256d2d