Update prepare-ci.sh to use uv

Author: Jason2866

tools/prepare-ci.sh

@@ -8,11 +8,13 @@ if [[ "$OSTYPE" == "darwin"* ]]; then
     brew install ninja || true
     brew install ccache || true
     brew install 7zip || true
-    python3 -m pip install uv
+    brew install uv || true
     uv venv
     uv pip install future pyelftools
 else
     echo "Linux detected. Install dependencies..."
     sudo apt update && sudo apt install -y gperf cmake ninja-build ccache p7zip-full
-    pip3 install wheel future pyelftools
+    curl -LsSf https://astral.sh/uv/install.sh | sh
+    uv venv
+    uv pip install future pyelftools
 fi