Bump groovy-all from 2.5.6 to 3.0.2

Bumps [groovy-all](https://github.com/apache/groovy) from 2.5.6 to 3.0.2.
- [Release notes](https://github.com/apache/groovy/releases)
- [Commits](https://github.com/apache/groovy/commits)

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

build.gradle

@@ -31,7 +31,7 @@ ext {
 }
 
 dependencies {
-    testCompile 'org.codehaus.groovy:groovy-all:2.5.6'
+    testCompile 'org.codehaus.groovy:groovy-all:3.0.2'
     testCompile 'org.spockframework:spock-core:1.3-groovy-2.5'
     testCompile "org.gebish:geb-spock:$gebVersion"
     testCompile 'io.github.bonigarcia:webdrivermanager:3.3.0'