Update HISTORY.md for #7346 (#7417)

Summary:
Copied from Andrew's entry for 6.12.3. Inserted here
retroactive to 6.12

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7417

Test Plan: no code change

Reviewed By: jay-zhuang

Differential Revision: D23815980

Pulled By: pdillinger

fbshipit-source-id: 3c8a052cdb61be1215d311556c9487f9ea5c8cb0

HISTORY.md

@@ -73,6 +73,7 @@
 * Make compaction report InternalKey corruption while iterating over the input.
 * Fix a bug which may cause MultiGet to be slow because it may read more data than requested, but this won't affect correctness. The bug was introduced in 6.10 release.
 * Fail recovery and report once hitting a physical log record checksum mismatch, while reading MANIFEST. RocksDB should not continue processing the MANIFEST any further.
+* Fixed a bug in size-amp-triggered and periodic-triggered universal compaction, where the compression settings for the first input level were used rather than the compression settings for the output (bottom) level.
 
 ### New Features
 * DB identity (`db_id`) and DB session identity (`db_session_id`) are added to table properties and stored in SST files. SST files generated from SstFileWriter and Repairer have DB identity “SST Writer” and “DB Repairer”, respectively. Their DB session IDs are generated in the same way as `DB::GetDbSessionId`. The session ID for SstFileWriter (resp., Repairer) resets every time `SstFileWriter::Open` (resp., `Repairer::Run`) is called.