Merge branch 'upstream' into concedo_experimental

# Conflicts:
#	.devops/vulkan.Dockerfile
#	ggml/src/ggml-sycl/ggml-sycl.cpp
#	ggml/src/ggml-webgpu/CMakeLists.txt
#	ggml/src/ggml-webgpu/ggml-webgpu.cpp
#	ggml/src/ggml-webgpu/wgsl-shaders/embed_wgsl.py
#	ggml/src/ggml-webgpu/wgsl-shaders/memset.wgsl
#	tests/test-backend-ops.cpp
#	tests/test-opt.cpp

src/llama-chat.cpp

@@ -16,10 +16,10 @@
 static std::string trim(const std::string & str) {
     size_t start = 0;
     size_t end = str.size();
-    while (start < end && isspace(str[start])) {
+    while (start < end && isspace(static_cast<unsigned char>(str[start]))) {
         start += 1;
     }
-    while (end > start && isspace(str[end - 1])) {
+    while (end > start && isspace(static_cast<unsigned char>(str[end - 1]))) {
         end -= 1;
     }
     return str.substr(start, end - start);