added 3.9 and 3.10 support mac

Author: simedw

.github/workflows/pythonpublish_mac.yml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         os: [macos-latest]
         architecture: [x64]
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
 
     steps:
       - uses: actions/checkout@v2