llama.cpp

bced4595 - sync : ggml (#29396)

sync : ggml (#29396) * ggml : bump version to 0.25.2 (ggml/1642) * ggml : fix ubsan error in `ggml_graph_nbytes` (ggml/1644) * ggml : bump version to 0.25.3 (ggml/1645) * sync : ggml