Update pythonpublish-macos.yml

Author: bcebere

.github/workflows/pythonpublish-macos.yml

@@ -6,10 +6,11 @@ on:
 
 jobs:
   deploy:
-    runs-on: macos-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         python-version: ['3.7', '3.8', '3.9', '3.10']
+        os: [macos-11, macos-12]
 
     steps:
       - uses: actions/checkout@v2