Adding version of elastic search which works with Opensearch

Author: glenrobson

pom.xml

@@ -165,7 +165,7 @@
         <dependency>
             <groupId>org.elasticsearch.client</groupId>
             <artifactId>elasticsearch-rest-high-level-client</artifactId>
-            <version>7.16.1</version>
+            <version>7.13.4</version>
         </dependency>
         <dependency>
             <groupId>com.amazonaws</groupId>