Uses setup-xcode action to select Xcode version

Author: peng-u-0807

.github/workflows/deploy-legacy.yml

@@ -42,8 +42,16 @@ jobs:
 
       - uses: actions/checkout@v4
 
-      - run: |
-          sudo xcode-select -s /Applications/Xcode_${XCODE_VERSION}.app/Contents/Developer
+      - name: Select Xcode Version
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: ${{ env.XCODE_VERSION }}
+
+      - name: Show selected Xcode
+        run: |
+          echo "Using Xcode at:"
+          xcode-select -p
+          xcodebuild -version
           
       - name: (Optional) Download iOS Simulator runtimes (18.x)
         run: |