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

Bumps [org.codehaus.gmavenplus:gmavenplus-plugin](https://github.com/groovy/GMavenPlus) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/groovy/GMavenPlus/releases)
- [Commits](groovy/GMavenPlus@4.2.0...4.2.1)

---
updated-dependencies:
- dependency-name: org.codehaus.gmavenplus:gmavenplus-plugin
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -169,7 +169,7 @@ Copyright (c) 2012 - Jeremy Long
         <maven-artifact-transfer.version>0.13.1</maven-artifact-transfer.version>
         <maven-common-artifact-filters.version>3.4.0</maven-common-artifact-filters.version>
         <groovy-all.version>2.4.21</groovy-all.version>
-        <gmavenplus-plugin.version>4.2.0</gmavenplus-plugin.version>
+        <gmavenplus-plugin.version>4.2.1</gmavenplus-plugin.version>
         <com.h3xstream.retirejs.core.version>3.0.4</com.h3xstream.retirejs.core.version>
         <jackson.version>2.19.1</jackson.version>
         <!--necessary for some IDEs to be able to execute test cases (Netbeans)-->