Bump org.codehaus.groovy:groovy-all from 2.4.8 to 2.4.21

Bumps [org.codehaus.groovy:groovy-all](https://github.com/apache/groovy) from 2.4.8 to 2.4.21.
- [Commits](https://github.com/apache/groovy/commits)

---
updated-dependencies:
- dependency-name: org.codehaus.groovy:groovy-all
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pom.xml

@@ -260,7 +260,7 @@
                         <groupId>org.codehaus.groovy</groupId>
                         <artifactId>groovy-all</artifactId>
                         <!-- any version of Groovy \>= 1.5.0 should work here -->
-                        <version>2.4.8</version>
+                        <version>2.4.21</version>
                         <scope>runtime</scope>
                     </dependency>
                 </dependencies>