Update Groovy version
Update Groovy version

raphw/spock,lokinell/spock,sebi-hgdata/spock,lokinell/spock,spockframework/spock,siordache/spock,raphw/spock,siordache/spock,GeeChao/spock,psideleau/spock,GeeChao/spock,siordache/spock,alien11689/spock,paplorinc/spock,sebi-hgdata/spock,leonard84/spock,sebi-hgdata/spock,lokinell/spock,alien11689/spock,paplorinc/spock,alien11689/spock,psideleau/spock,paplorinc/spock,raphw/spock,GeeChao/spock,psideleau/spock