#3541 refactor: Documented removals slated for v0.57 Pull request opened by edgarrmondragon SSIA Summary by Sourcery Clarify and document the planned removal of deprecated SQL shim imports for v0.57 and update deprecation messaging to reference the specific release. Enhancements: • Tighten deprecation warnings across SQL-related modules to specify removal in v0.57 and direct users to the consolidated singer_sdk.sql imports. Documentation: • Add deprecation section for v0.57 and a migration guide detailing how to consolidate SQL imports into singer_sdk.sql and singer_sdk.sql.connector. meltano/sdk