Added Python 3.10 and 3.11 to CI testing

Author: lindonroberts

.github/workflows/python_testing.yml

@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["2.7", "3.6", "3.7", "3.8", "3.9"]
+        python-version: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
 
     steps:
     - uses: actions/checkout@v2