Release Note 1.6.2

# Features & Improvements
1. Optimize the strategy of selecting be to make it more balanced #388
2. Support cdc synchronization of pg partition table #389
3. Support flink binary type #397
4. Add test case #391 #392 #393 #394 #409
5. Support group commit #412 #413

# Bug
1. Fix duplicate splitid when reading #414
2. Fix error when multiple fenodes are reported #416
3. Fix the problem of mongdb synchronization type conversion error #414
4. Fix several problems of SchemaChange #403 #408

# Thanks
@bingquanzhao
@JNSimba
@MaoMiMao
@qg-lin
@vinlee19

The issue contains the proposed 1.6.2 release-note contents and references issues #388 through #416, but it names no target file, test, or entry point. Review those referenced issues first, then determine where release notes are maintained and ensure the listed features, fixes, and contributors are represented there.

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