Update ggml layer

diff --git a/sources/ggml b/sources/ggml
index 3b6b0ca87746e705eafb6feb98cc6e83e63e490a..8b4653b335a3543cea057cfaacb36b0dd92bdb9a 160000 (submodule)
--- a/sources/ggml
+++ b/sources/ggml
@@ -1 +1 @@
-Subproject commit 3b6b0ca87746e705eafb6feb98cc6e83e63e490a
+Subproject commit 8b4653b335a3543cea057cfaacb36b0dd92bdb9a