[FIXED JENKINS-13154] integrated the fix to XStream that removes the lock contention.

changelog.html

@@ -66,6 +66,9 @@ Upcoming changes</a>
   <li class=bug>
     End up more gracefully if there's some problem when searching for user partipication in the build
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-13564">issue 13564</a>)
+  <li class=rfe>
+    Improved the performance of the fingerprint persistence.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-13154">issue 13154</a>)
   <li class=rfe>
     PAM authentication supports '@group' to force interpretation as a group instead of user.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-13526">issue 13526</a>)

core/pom.xml

@@ -226,7 +226,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>org.jvnet.hudson</groupId>
       <artifactId>xstream</artifactId>
-      <version>1.3.1-jenkins-9</version>
+      <version>1.3.1-jenkins-10</version>
     </dependency>
     <dependency>
       <groupId>jfree</groupId>