chore(pom): bump groovy to version 2.3.0
chore(pom): bump groovy to version 2.3.0

escardin/camunda-spin,escardin/camunda-spin,escardin/camunda-spin,camunda/camunda-spin,camunda/camunda-spin,camunda/camunda-spin,escardin/camunda-spin,camunda/camunda-spin