build(deps): bump groovy.version from 4.0.20 to 4.0.21

Bumps `groovy.version` from 4.0.20 to 4.0.21.

Updates `org.apache.groovy:groovy` from 4.0.20 to 4.0.21
- [Commits](https://github.com/apache/groovy/commits)

Updates `org.apache.groovy:groovy-xml` from 4.0.20 to 4.0.21
- [Commits](https://github.com/apache/groovy/commits)

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

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

pom.xml

@@ -49,7 +49,7 @@
     </scm>
 
     <properties>
-        <groovy.version>4.0.20</groovy.version>
+        <groovy.version>4.0.21</groovy.version>
         <httpclient.version>5.3.1</httpclient.version>
         <jackson-databind.version>2.17.0</jackson-databind.version>