llama.cpp b9972 adds stream support for exec_shell_command

The llama.cpp project has released version b9972, which introduces the ability to enable streaming for the `exec_shell_command` function within the server component. This update includes the implementation of stream initialization and testing, along with corresponding documentation updates.

• Server: allows stream for exec_shell_command (PR #25526)
• macOS/iOS: Binaries provided for Apple Silicon (arm64), Intel (x64), and iOS XCFramework; KleidiAI support is disabled.
• Linux: Builds available for Ubuntu x64, arm64, and s390x across CPU, Vulkan, ROCm 7.2, OpenVINO, SYCL FP32, and SYCL FP16 backends.
• Android: Arm64 CPU binary released.
• Windows: Binaries support CPU, OpenCL Adreno, CUDA 12/13, Vulkan, OpenVINO, SYCL, and HIP on x64 and arm64 architectures.
• openEuler: Builds for x86 and aarch64 with ACL Graph support are available; standard builds are disabled.
• UI: Standard UI binary released.

This release provides updated binaries for various platforms and hardware accelerators while adding streaming capabilities to shell command execution.