update groovy-starter.conf to deal with new gant version
update groovy-starter.conf to deal with new gant version

clockworkorange/grails-core,clockworkorange/grails-core,erdi/grails-core,clockworkorange/grails-core,erdi/grails-core,clockworkorange/grails-core,clockworkorange/grails-core,erdi/grails-core