Bump plugin from 4.15 to 4.17

Bumps [plugin](https://github.com/jenkinsci/plugin-pom) from 4.15 to 4.17.
- [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-4.15...plugin-4.17)

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

pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>plugin</artifactId>
-        <version>4.15</version>
+        <version>4.17</version>
         <relativePath />
     </parent>
     <properties>