chore(deps): bump groovy.version from 3.0.19 to 3.0.21 (#338)

Bumps `groovy.version` from 3.0.19 to 3.0.21.

Updates `org.codehaus.groovy:groovy` from 3.0.19 to 3.0.21
- [Commits](https://github.com/apache/groovy/commits)

Updates `org.codehaus.groovy:groovy-json` from 3.0.19 to 3.0.21
- [Commits](https://github.com/apache/groovy/commits)

---
updated-dependencies:
- dependency-name: org.codehaus.groovy:groovy
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.codehaus.groovy:groovy-json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

plugin/pom.xml

@@ -38,7 +38,7 @@
     <file-management.version>3.1.0</file-management.version>
     <bonita2bar.version>8.0.0</bonita2bar.version>
     <!-- Test -->
-    <groovy.version>3.0.19</groovy.version>
+    <groovy.version>3.0.21</groovy.version>
   </properties>
   <dependencyManagement>
     <dependencies>