[WIP] Add tests for python 3.10

Signed-off-by: gaugup <gaugup@microsoft.com>

Author: gaugup

.github/workflows/pythonpackage.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
         os: [ubuntu-latest, macos-latest]
 
     steps: