Specify arm64 arch

Author: dstogov

.github/workflows/push.yml

@@ -42,7 +42,7 @@ env:
   CXX: ccache g++
 jobs:
   MACOS_ARM64_DEBUG_ZTS:
-    runs-on: macos-12
+    runs-on: macos-12-arm64
     steps:
       - name: git checkout
         uses: actions/checkout@v4