Updated jaxb2 plugin to allow generation in non UTF-8 encoding

pom.xml

@@ -190,7 +190,7 @@
                 <plugin>
                     <groupId>org.jvnet.jaxb2.maven2</groupId>
                     <artifactId>maven-jaxb2-plugin</artifactId>
-                    <version>0.8.3</version>
+                    <version>0.13.1</version>
                 </plugin>
             </plugins>
         </pluginManagement>