Bump groovy-all from 2.4.20 to 2.4.21

Bumps [groovy-all](https://github.com/apache/groovy) from 2.4.20 to 2.4.21. - [Release notes](https://github.com/apache/groovy/releases) - [Commits](https://github.com/apache/groovy/commits) Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

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>