#3763 chore: Fix some types in tests Pull request opened by edgarrmondragon Summary by Sourcery Strengthen static typing throughout the test suite. Enhancements: • Improve type correctness across test fixtures and helper classes by aligning signatures, annotating callback mappings, and marking overridden methods. Tests: • Update test code to satisfy static type checkers, including Python-version-compatible override imports and targeted type-checker suppressions. meltano/sdk