GROOVY-8921: Bump build-scan gradle plugin to 2.1
GROOVY-8921: Bump build-scan gradle plugin to 2.1

jwagenleitner/incubator-groovy,shils/incubator-groovy,jwagenleitner/incubator-groovy,paulk-asert/groovy,jwagenleitner/incubator-groovy,russel/groovy,armsargis/groovy,shils/incubator-groovy,apache/groovy,shils/groovy,russel/groovy,paulk-asert/incubator-groovy,paulk-asert/incubator-groovy,russel/groovy,traneHead/groovy-core,apache/incubator-groovy,paulk-asert/incubator-groovy,paulk-asert/groovy,shils/groovy,apache/groovy,armsargis/groovy,apache/groovy,paulk-asert/groovy,apache/incubator-groovy,armsargis/groovy,jwagenleitner/groovy,jwagenleitner/groovy,traneHead/groovy-core,paulk-asert/incubator-groovy,shils/incubator-groovy,apache/incubator-groovy,shils/groovy,traneHead/groovy-core,shils/incubator-groovy,paulk-asert/groovy,jwagenleitner/groovy,apache/groovy,jwagenleitner/incubator-groovy,armsargis/groovy,russel/groovy,paulk-asert/incubator-groovy,shils/groovy,apache/incubator-groovy,jwagenleitner/groovy,traneHead/groovy-core