Upgrade to SECCOM recommended elasticsearch release

Upgrade to elasticsearch version 7.6.1

Change-Id: I1d2c98de629d1f023e726d5e474033a0e39f55b0
Issue-ID: CCSDK-2632
Signed-off-by: Dan Timoney <dtimoney@att.com>
diff --git a/ms/neng/pom.xml b/ms/neng/pom.xml
index 7ff4460..2c2a923 100644
--- a/ms/neng/pom.xml
+++ b/ms/neng/pom.xml
@@ -341,7 +341,7 @@
         <dependency>
             <groupId>org.elasticsearch</groupId>
             <artifactId>elasticsearch</artifactId>
-            <version>5.6.3</version>
+            <version>7.6.1</version>
         </dependency>
         <dependency>
             <groupId>io.searchbox</groupId>