Update python-checks.yml: typing uses 3.10+ syntax; auto # threads fo…

…r test

.github/workflows/python-checks.yml

@@ -29,8 +29,9 @@ jobs:
         python -m pip install --upgrade pip wheel
         pip install -e .[test]
     - name: Type check with mypy
+      if: ${{ matrix.python-version >= 3.10 }}
       run: |
         mypy
     - name: Test with pytest
       run: |
-        pytest
+        pytest -n auto