Bump gmavenplus-plugin from 1.12.1 to 1.13.0 (#439)

Bumps [gmavenplus-plugin](https://github.com/groovy/GMavenPlus) from 1.12.1 to 1.13.0.
- [Release notes](https://github.com/groovy/GMavenPlus/releases)
- [Commits](groovy/GMavenPlus@1.12.1...1.13.0)

---
updated-dependencies:
- dependency-name: org.codehaus.gmavenplus:gmavenplus-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

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

pom.xml

@@ -368,7 +368,7 @@
         <plugin>
           <groupId>org.codehaus.gmavenplus</groupId>
           <artifactId>gmavenplus-plugin</artifactId>
-          <version>1.12.1</version>
+          <version>1.13.0</version>
         </plugin>
         <plugin>
           <groupId>org.codehaus.mojo</groupId>