Merge pull request #1415 from kubernetes-client/dependabot/maven/org.codehaus.groovy-groovy-all-2.4.21

Bump groovy-all from 2.4.20 to 2.4.21

Author: k8s-ci-robot

e2e/pom.xml

@@ -73,7 +73,7 @@
                     <dependency>
                         <groupId>org.codehaus.groovy</groupId>
                         <artifactId>groovy-all</artifactId>
-                        <version>2.4.20</version>
+                        <version>2.4.21</version>
                     </dependency>
                 </dependencies>
             </plugin>