wheel building: try newer macos ci runner

Author: proycon

.github/workflows/wheels.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-20.04, macOS-11]
+        os: [ubuntu-20.04, macOS-12]
 
     steps:
       - uses: actions/checkout@v3