:champagne: NonNull :champagne: Update modules

diff --git a/ast b/ast
index 968afae52aabb3e632be7f498c02fdcb6f8881ba..3cbaf19df28f60ce7b3bb5b0cb3d867902782f88 160000 (submodule)
--- a/ast
+++ b/ast
@@ -1 +1 @@
-Subproject commit 968afae52aabb3e632be7f498c02fdcb6f8881ba
+Subproject commit 3cbaf19df28f60ce7b3bb5b0cb3d867902782f88

diff --git a/util b/util
index dc6040ef47f0e9b03c3a2d4dbf4c551c54a299eb..a4a459a135e554a2974d94e941e5395c2a83eff7 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit dc6040ef47f0e9b03c3a2d4dbf4c551c54a299eb
+Subproject commit a4a459a135e554a2974d94e941e5395c2a83eff7