Try python -m for pytest

Author: adamtheturtle

.github/workflows/windows-ci.yml

@@ -55,4 +55,4 @@ jobs:
           "${{ env.VIRTUAL_ENV }}\Scripts\Activate.ps1"
           # We run tests against "." and not the tests directory as we test the README
           # and documentation.
-          pytest -s -vvv --cov-fail-under 100 --cov=src/ --cov=tests . --cov-report=xml
+          python -m pytest -s -vvv --cov-fail-under 100 --cov=src/ --cov=tests . --cov-report=xml