enable arm64 GHA runners

Author: wjakob

.github/workflows/wheels.yml

@@ -36,20 +36,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-12, macos-14, windows-latest]
 
     steps:
     - uses: actions/checkout@v4
       with:
         submodules: true
 
     - uses: pypa/cibuildwheel@v2.17
-      env:
-        # Cross-compile on macOS
-        CIBW_ARCHS_MACOS: x86_64 arm64
-
-        # Temporary: use pre-release Python 3.12 for stable ABI builds
-        CIBW_PRERELEASE_PYTHONS: True
 
     - name: Verify clean directory
       run: git diff --exit-code