Update llama.cpp layer

diff --git a/sources/llama.cpp b/sources/llama.cpp
index 6decafbbf650a488adca5605a23fc243d2b942c0..de7812c7dd87ca8fea4edb29403d4b5c4e42b91b 160000 (submodule)
--- a/sources/llama.cpp
+++ b/sources/llama.cpp
@@ -1 +1 @@
-Subproject commit 6decafbbf650a488adca5605a23fc243d2b942c0
+Subproject commit de7812c7dd87ca8fea4edb29403d4b5c4e42b91b