focus on fixing macos15-intel

Author: gletort

.github/workflows/cross-platform-envtest.yml

@@ -24,7 +24,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Set up Xcode
         if: runner.os == 'macOS'
-        run: brew install xcode
+        run: brew install llvm 
 
       - name: Set up JDK ${{ matrix.java }}
         uses: actions/setup-java@v4