Use Xcode 16.4 on CI

Author: zsmb13

.github/workflows/build-all.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v4
       - name: Set Xcode version
-        run: sudo xcode-select -s /Applications/Xcode_16.2.app/Contents/Developer
+        run: sudo xcode-select -s /Applications/Xcode_16.4.app/Contents/Developer
       - name: iOS debug build
         run: ./amper build -m iosApp -p iosArm64