Sync CHANGES for 9.11.1

lucene/CHANGES.txt

@@ -285,9 +285,6 @@ Bug Fixes
 * GITHUB#13463: Address bug in MultiLeafKnnCollector causing #minCompetitiveSimilarity to stay artificially low in
   some corner cases. (Greg Miller)
 
-* GITHUB#13493: StringValueFacetCunts stops throwing NPE when faceting over an empty match-set. (Grebennikov Roman,
-  Stefan Vodita)
-
 Other
 --------------------
 (No changes)
@@ -296,7 +293,19 @@ Other
 
 Bug Fixes
 ---------------------
-(No changes)
+
+* GITHUB#13498: Avoid performance regression by constructing lazily the PointTree in NumericComparator. (Ignacio Vera)
+
+* GITHUB#13501, GITHUB#13478: Remove intra-merge parallelism for everything except HNSW graph merges. (Ben Trent)
+
+* GITHUB#13498, GITHUB#13340: Allow adding a parent field to an index with no fields (Michael Sokolov)
+
+* GITHUB#12431: Fix IndexOutOfBoundsException thrown in DefaultPassageFormatter
+  by unordered matches. (Stephane Campinas)
+
+* GITHUB#13493: StringValueFacetCounts stops throwing NPE when faceting over an empty match-set. (Grebennikov Roman,
+  Stefan Vodita)
+
 
 ======================== Lucene 9.11.0 =======================