chore(deps): bump plugin from 4.59 to 4.60 (#173)

Author: dependabot[bot]

pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>4.59</version>
+    <version>4.60</version>
     <relativePath />
   </parent>