Bump jansi from 1.18 to 2.3.4

Bumps [jansi](https://github.com/fusesource/jansi) from 1.18 to 2.3.4.
- [Release notes](https://github.com/fusesource/jansi/releases)
- [Changelog](https://github.com/fusesource/jansi/blob/master/changelog.md)
- [Commits](fusesource/jansi@jansi-project-1.18...jansi-2.3.4)

---
updated-dependencies:
- dependency-name: org.fusesource.jansi:jansi
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

build.gradle

@@ -122,7 +122,7 @@ subprojects {
         compile "javax.annotation:javax.annotation-api:$javaAnnotationApiVersion"
 
         if (isStandardGroovyMavenProject) {
-            documentation "org.fusesource.jansi:jansi:1.18"
+            documentation "org.fusesource.jansi:jansi:2.3.4"
             documentation "org.codehaus.groovy:groovy-dateutil:$groovyVersion"
             documentation 'info.picocli:picocli:4.4.0'
             compile group: 'org.codehaus.groovy', name: 'groovy', version: groovyVersion