Add python 3.11 to testing

Author: atong01

.github/workflows/os-coverage.yml

@@ -9,7 +9,7 @@ jobs:
       max-parallel: 15
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ['3.8', '3.9', '3.10', '3.11']
         exclude:
           - python-version: '3.8'
             os: windows-latest # https://pytorch.org/get-started/locally/#windows-python (actually 3.7 seems to be the problem)