build(deps): bump org.codehaus.gmavenplus:gmavenplus-plugin in /src

Bumps [org.codehaus.gmavenplus:gmavenplus-plugin](https://github.com/groovy/GMavenPlus) from 4.0.1 to 4.1.1.
- [Release notes](https://github.com/groovy/GMavenPlus/releases)
- [Commits](groovy/GMavenPlus@4.0.1...4.1.1)

---
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]>

src/refimpl-tests/pom.xml

@@ -26,7 +26,7 @@
         visit https://github.com/groovy/GMavenPlus/wiki -->
         <groupId>org.codehaus.gmavenplus</groupId>
         <artifactId>gmavenplus-plugin</artifactId>
-        <version>4.0.1</version>
+        <version>4.1.1</version>
         <executions>
           <execution>
             <goals>