:art: Update sub-modules

diff --git a/ast b/ast
index 8c2fb420e66bfac4dfec9b11e59c8e8bbe01f956..8fe7b190037c09cee1b5ff6cca54b4dba88b9d1a 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 8c2fb420e66bfac4dfec9b11e59c8e8bbe01f956
+Subproject commit 8fe7b190037c09cee1b5ff6cca54b4dba88b9d1a

diff --git a/util b/util
index 92c305e9405870ff725218044b28a46266cc3012..e8a2a5ad48f638c887906f5518df1d09d7035ec1 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit 92c305e9405870ff725218044b28a46266cc3012
+Subproject commit e8a2a5ad48f638c887906f5518df1d09d7035ec1