Update dependency org.jenkins-ci.plugins:plugin to v5.9 (#405)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -29,7 +29,7 @@ THE SOFTWARE.
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>5.4</version>
+    <version>5.9</version>
     <relativePath />
   </parent>