ci: pinning linting to py3.10.6 due to mypy bug

Author: engnadeau

.github/workflows/test.yml

@@ -16,7 +16,9 @@ jobs:
         python-version:
           - "3.8"
           - "3.9"
-          - "3.10"
+          # TODO: remove pinned minor version when mypy >0.971 is released
+          # https://github.com/python/mypy/issues/13627#issuecomment-1240907370
+          - "3.10.6"
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}