Bump groovy-all from 2.4.15 to 2.4.20

Bumps [groovy-all](https://github.com/apache/groovy) from 2.4.15 to 2.4.20.
- [Release notes](https://github.com/apache/groovy/releases)
- [Commits](https://github.com/apache/groovy/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

pom.xml

@@ -64,7 +64,7 @@
         <spotbugs-maven-plugin.version>3.1.10</spotbugs-maven-plugin.version>
         <spotbugs-annotations-version>3.1.11</spotbugs-annotations-version>
         <glassfish.el.version>2.1.2-b04</glassfish.el.version>
-        <groovy.version>2.4.15</groovy.version>
+        <groovy.version>2.4.20</groovy.version>
         <htmlunit.version>2.37.0</htmlunit.version>
         <jacoco.version>0.8.5</jacoco.version>
         <jandex.version>2.0.3.Final</jandex.version>