OZG-7346: Try newer version of Elasticsearch

ozgcloud-elasticsearch-operator/src/test/java/de/ozgcloud/operator/common/elasticsearch/ElasticsearchTestClient.java

@@ -39,7 +39,7 @@ import co.elastic.clients.transport.rest_client.RestClientTransport;
 
 public class ElasticsearchTestClient {
 	
-	private static final String IMAGE_NAME = "docker.elastic.co/elasticsearch/elasticsearch:8.11.3";
+	private static final String IMAGE_NAME = "docker.elastic.co/elasticsearch/elasticsearch:8.16.1";
 	private static final String USER = "elastic";
 	private static final String PASSWORD = "s3cret";
 	private static final int PORT = 9200;
@@ -57,7 +57,7 @@ public class ElasticsearchTestClient {
 	}
 	
 	private static RestClient buildRestClient() {
-		var host = new HttpHost(ELASTICSEARCH_CONTAINER.getHttpHostAddress(), ELASTICSEARCH_CONTAINER.getMappedPort(PORT), SCHEME);
+		var host = new HttpHost("localhost", ELASTICSEARCH_CONTAINER.getMappedPort(PORT), SCHEME);
 		var credentialsProvider = buildCredentialsProvider();
 		var builder = RestClient.builder(host);