Update ggml and llama.cpp layers

diff --git a/sources/ggml b/sources/ggml
index a1328577ac9b25697c96691deea05a11256a2611..21b69cb17bd8f84096f3887e1fe5e8a8e37640a1 160000 (submodule)
--- a/sources/ggml
+++ b/sources/ggml
@@ -1 +1 @@
-Subproject commit a1328577ac9b25697c96691deea05a11256a2611
+Subproject commit 21b69cb17bd8f84096f3887e1fe5e8a8e37640a1

diff --git a/sources/llama.cpp b/sources/llama.cpp
index 1d8504338ea27c7331998c11afdbd47ce5a9daac..4de5c210630827455520f9778e26231dabb2ba79 160000 (submodule)
--- a/sources/llama.cpp
+++ b/sources/llama.cpp
@@ -1 +1 @@
-Subproject commit 1d8504338ea27c7331998c11afdbd47ce5a9daac
+Subproject commit 4de5c210630827455520f9778e26231dabb2ba79