Merge pull request #424 from jenkinsci/dependabot/maven/org.jenkins-ci.plugins-plugin-5.9

Author: github-actions[bot]

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>5.8</version>
+        <version>5.9</version>
         <relativePath />
     </parent>