Bump plugin from 4.12 to 4.13 (#206)

Bumps [plugin](https://github.com/jenkinsci/plugin-pom) from 4.12 to 4.13.
- [Release notes](https://github.com/jenkinsci/plugin-pom/releases)
- [Changelog](https://github.com/jenkinsci/plugin-pom/blob/master/CHANGELOG.md)
- [Commits](jenkinsci/plugin-pom@plugin-4.12...plugin-4.13)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>4.12</version>
+        <version>4.13</version>
         <relativePath />
     </parent>
     <artifactId>junit</artifactId>