Fix pytest warning failing the test suite
This MR fixes the test failure by resolving the deprecated usage of pytest.warns(None), see https://docs.pytest.org/en/latest/how-to/capture-warnings.html#additional-use-cases-of-warnings-in-tests.
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This MR fixes the test failure by resolving the deprecated usage of pytest.warns(None), see https://docs.pytest.org/en/latest/how-to/capture-warnings.html#additional-use-cases-of-warnings-in-tests.