Mute TokenBackwardsCompatibilityIT while it awaits fix.

x-pack/qa/rolling-upgrade/src/test/java/org/elasticsearch/upgrades/TokenBackwardsCompatibilityIT.java

@@ -8,6 +8,7 @@ package org.elasticsearch.upgrades;
 
 import org.apache.http.HttpHeaders;
 import org.apache.http.HttpHost;
+import org.apache.lucene.util.LuceneTestCase;
 import org.elasticsearch.Version;
 import org.elasticsearch.client.Request;
 import org.elasticsearch.client.RequestOptions;
@@ -26,6 +27,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+@LuceneTestCase.AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/72012")
 public class TokenBackwardsCompatibilityIT extends AbstractUpgradeTestCase {
 
     private Collection<RestClient> twoClients = null;