Merge pull request #2155 from daniel-beck/JENKINS-33546-33605

[JENKINS-33546] [JENKINS-33605] Back to Stapler 1.239

core/pom.xml

@@ -39,7 +39,7 @@ THE SOFTWARE.
 
   <properties>
     <staplerFork>true</staplerFork>
-    <stapler.version>1.240</stapler.version>
+    <stapler.version>1.239</stapler.version>
     <spring.version>2.5.6.SEC03</spring.version>
     <groovy.version>1.8.9</groovy.version>
   </properties>