Merge branch 'upstream' into concedo_experimental

# Conflicts:
#	.github/workflows/build.yml
#	.github/workflows/server.yml
#	CMakeLists.txt
#	Makefile
#	examples/embedding/embedding.cpp
#	examples/imatrix/imatrix.cpp
#	examples/llama-bench/llama-bench.cpp
#	examples/llava/MobileVLM-README.md
#	examples/parallel/parallel.cpp
#	examples/perplexity/perplexity.cpp
#	examples/quantize/CMakeLists.txt
#	examples/server/README.md
#	examples/speculative/speculative.cpp
#	tests/test-backend-ops.cpp

otherarch/whispercpp/whisper.cpp

@@ -2802,7 +2802,7 @@ static bool whisper_decode_internal(
             ggml_backend_tensor_set(KQ_mask, wstate.inp_mask.data(), 0, ggml_nelements(KQ_mask)*sizeof(float));
         }
 
-        logits = gf->nodes[gf->n_nodes - 1];
+        logits = ggml_graph_node(gf, -1);
 
         if (!ggml_graph_compute_helper(wstate.backend, gf, n_threads)) {
             return false;