Fix merge

Author: carlosdelest

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlCapabilities.java

@@ -547,7 +547,7 @@ public enum Cap {
         /**
          * LOOKUP JOIN
          */
-        JOIN_LOOKUP_V5(Build.current().isSnapshot()),
+        JOIN_LOOKUP_V6(Build.current().isSnapshot()),
 
         /**
          * Fix for https://github.com/elastic/elasticsearch/issues/117054