v1.2.456-nightly

What's Changed

Thoughtful Bug Fix 🔧

• fix(query): ensure all inputs pull all data that less than max partition count in new agg singleton by @Freejww in #15418

Code Refactor 🎉

• refactor: Minimize lock duration during raft-log export by @drmingdrmer in #15417

Others 📒

• chore: Vendor parquet2 instead by @Xuanwo in #15422

Full Changelog: v1.2.455-nightly...v1.2.456-nightly