Move the GITHUB#16367 CHANGES entry to the 10.6.0 section (#16393)

Author: jeho-rpls

lucene/CHANGES.txt

@@ -187,10 +187,6 @@ Optimizations
 
 Bug Fixes
 ---------------------
-* GITHUB#16367: HNSW graph construction now periodically checks whether the surrounding merge has
-  been aborted, so IndexWriter#rollback and abortMerges no longer block until the entire graph is
-  built. (Jeho Jeong)
-
 * GITHUB#14049: Randomize KNN codec params in RandomCodec. Fixes scalar quantization div-by-zero
   when all values are identical. (Mike Sokolov)
 
@@ -390,6 +386,10 @@ Bug Fixes
 * GITHUB#16389: Fix double-counting of the underlying Automaton in
   AutomatonQuery#ramBytesUsed. (Sasilekha R)
 
+* GITHUB#16367: HNSW graph construction now periodically checks whether the surrounding merge has
+  been aborted, so IndexWriter#rollback and abortMerges no longer block until the entire graph is
+  built. (Jeho Jeong)
+
 Other
 ---------------------
 * GITHUB#16266: Remove deprecated search(Query, Collector) calls in QueryUtils by replacing