update submodule to `cd4fddb29f81d6a1f6d51a0c016bc6b486d68def`

llm/llama.cpp

@@ -1 +1 @@
-Subproject commit 011e8ec577fd135cbc02993d3ea9840c516d6a1c
+Subproject commit cd4fddb29f81d6a1f6d51a0c016bc6b486d68def