[JENKINS-8988] picking up new Stapler that fies the XML API issue.

changelog.html

@@ -60,7 +60,9 @@ Upcoming changes</a>
 <!-- Record your changes in the trunk here. -->
 <div id="trunk" style="display:none"><!--=TRUNK-BEGIN=-->
 <ul class=image>
-  <li class=>
+  <li class=bug>
+    Fixed a bug where XML API can produce malformed XML.
+    (<a href="http://issues.jenkins-ci.org/browse/JENKINS-8988">issue 8988</a>)
 </ul>
 </div><!--=TRUNK-END=-->
 

core/pom.xml

@@ -382,7 +382,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>org.kohsuke.stapler</groupId>
       <artifactId>stapler-jelly</artifactId>
-      <version>1.159</version>
+      <version>1.160</version>
       <exclusions>
         <exclusion>
           <groupId>commons-jelly</groupId>