Mute ChildrenToParentAggregatorTests

Tracked at #60980

modules/parent-join/src/test/java/org/elasticsearch/join/aggregations/ChildrenToParentAggregatorTests.java

@@ -32,6 +32,7 @@ import org.apache.lucene.search.Query;
 import org.apache.lucene.search.TermInSetQuery;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.util.BytesRef;
+import org.apache.lucene.util.LuceneTestCase;
 import org.elasticsearch.Version;
 import org.elasticsearch.cluster.metadata.IndexMetadata;
 import org.elasticsearch.common.collect.Tuple;
@@ -74,6 +75,7 @@ import java.util.function.Consumer;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
+@LuceneTestCase.AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/60980")
 public class ChildrenToParentAggregatorTests extends AggregatorTestCase {
 
     private static final String CHILD_TYPE = "child_type";