Github Actions: enable py3.10 and py3.11

Author: thiell

.github/workflows/nosetests.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: [ '3.7', '3.8', '3.9']
+        python-version: [ '3.7', '3.8', '3.9', '3.10', '3.11']
         include:
           - os: ubuntu-20.04
             python-version: '3.6'