#3677 fix: Convert class-scoped fixtures in built-in integration tests into `@classmethod`s (#3676) Pull request opened by edgarrmondragon SSIA, backport of #3676 Summary by Sourcery Convert class-scoped pytest fixtures in built-in integration tests to class methods and update pytest version constraint for testing. Enhancements: • Refactor test_target_csv and test_target_parquet to define class-scoped fixtures as @classmethods for better compatibility with newer pytest versions. Build: • Bump pytest testing dependency to >=9.1 in pyproject.toml. Tests: • Adjust factory-based runner fixture to be a class method to align with updated fixture patterns in generated tests. meltano/sdk