fix: update working-directory for SDK downloads and installations in …

…CI workflow

.github/workflows/main.yml

@@ -169,12 +169,14 @@ jobs:
         if: startsWith(matrix.build, 'cross-macos') || startsWith(matrix.build, 'cross-ios')
         run: sudo apt-get install llvm
       - name: Download macOS SDK
+        working-directory: ${{ runner.temp }}
         if: startsWith(matrix.build, 'cross-macos')
         run: |
           wget https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacOSX11.3.sdk.tar.xz
           tar -xf MacOSX11.3.sdk.tar.xz
           echo "SDKROOT=$(pwd)/MacOSX11.3.sdk" >> $GITHUB_ENV
       - name: Download iOS SDK
+        working-directory: ${{ runner.temp }}
         if: startsWith(matrix.build, 'cross-ios')
         run: |
           wget https://github.com/xybp888/iOS-SDKs/releases/download/iOS18.1-SDKs/iPhoneOS18.1.sdk.zip
@@ -283,7 +285,7 @@ jobs:
           echo "WASI_TOOLCHAIN_VERSION=$VERSION" >> "$GITHUB_ENV"
 
       - name: Install wasi-sdk
-        working-directory: /tmp
+        working-directory: ${{ runner.temp }}
         env:
           REPO: WebAssembly/wasi-sdk
         run: |
@@ -316,6 +318,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install cuda-minimal-build-11-8
+        working-directory: ${{ runner.temp }}
         shell: bash
         run: |
           # https://developer.nvidia.com/cuda-downloads?target_os=Linux&target_arch=x86_64&Distribution=Ubuntu&target_version=20.04&target_type=deb_network