#9882 chore: Remove redundant `typing.cast` instances Pull request opened by edgarrmondragon SSIA Summary by Sourcery Refine type checking and configuration handling across core scheduling and Singer plugin components. Bug Fixes: • Remove unnecessary type casts in schedule argument construction to rely on correct underlying types. • Adjust SelectionType addition method typing to satisfy stricter type checking rules. Enhancements: • Annotate Singer base plugin configuration processing with an override decorator and simplify its parameter typing. • Enable mypy's redundant cast warnings and reduce the list of excluded core modules from static analysis. meltano/meltano