Bump revision from 3.3.6 to 3.4.0 (#102)

Author: dependabot[bot]

pom.xml

@@ -31,7 +31,7 @@
   </scm>
 
   <properties>
-    <revision>3.3.6</revision>
+    <revision>3.4.0</revision>
     <changelist>999999-SNAPSHOT</changelist>
     <jenkins.version>2.361.4</jenkins.version>
     <gitHubRepo>jenkinsci/${project.artifactId}-plugin</gitHubRepo>