If updating stapler-adjunct-timeline to 1.4, ought to also update tests JAR.

core/pom.xml

@@ -179,7 +179,7 @@ THE SOFTWARE.
     <dependency><!-- this helps us see the source code of the control while we edit Jenkins. -->
       <groupId>org.kohsuke.stapler</groupId>
       <artifactId>stapler-adjunct-timeline</artifactId>
-      <version>1.0</version>
+      <version>1.4</version>
       <classifier>tests</classifier>
       <scope>test</scope>
     </dependency>