Add Elasticsearch REST client dependency

Added the 'elasticsearch-rest-client' dependency (version 9.2.2) to the connector-app module to enable REST-based interactions with Elasticsearch.

Author: alegauss

connector/connector-app/pom.xml

@@ -146,6 +146,11 @@
             <version>9.2.2</version>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>org.elasticsearch.client</groupId>
+            <artifactId>elasticsearch-rest-client</artifactId>
+            <version>9.2.2</version>
+        </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>