Update dependency org.jenkins-ci.plugins:plugin to v5.18

Author: renovate[bot]

pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>5.17</version>
+    <version>5.18</version>
     <relativePath />
   </parent>