Update docker-maven-plugin version

Updated the fabric8 docker-maven-plugin version to 23.0

Change-Id: I98a6dde474ea66be450f72a446d3d9e58138282b
Issue-Id: SDC-640
Signed-off-by: Idan Amit <ia096e@intl.att.com>
diff --git a/utils/webseal-simulator/pom.xml b/utils/webseal-simulator/pom.xml
index 8f288be..fb60abd 100644
--- a/utils/webseal-simulator/pom.xml
+++ b/utils/webseal-simulator/pom.xml
@@ -203,7 +203,7 @@
 					<plugin>
 						<groupId>io.fabric8</groupId>
 						<artifactId>docker-maven-plugin</artifactId>
-						<version>0.19.1</version>
+						<version>0.23.0</version>
 
 						<configuration>
 							<verbose>true</verbose>