Summary

• update CHANGELOG.md for v1.2.0 release preparation
• add Release date: TBD
• add changelog entries for user-visible changes since v1.1.3 (Reorganize TLS options: implement PREFERRED/REQUIRED SSL mode behavior #1234, Support MySQL 8 row/column alias syntax in executemany INSERT regex #1235, Expose SQLSTATE on MySQL protocol exceptions without changing exception formatting #1236, Reject non-finite decimal.Decimal query parameters (NaN, sNaN, ±Infinity) #1237)

Validation

• python -m ruff format --diff
• python -m ruff check --diff
• pytest -v pymysql (fails in this environment: MySQL server on localhost is not running)
• parallel_validation (Code Review ✅ / CodeQL ✅)