GROOVY-10389: Bump logback to 1.2.7
GROOVY-10389: Bump logback to 1.2.7

apache/incubator-groovy,apache/groovy,paulk-asert/groovy,apache/incubator-groovy,apache/incubator-groovy,paulk-asert/groovy,paulk-asert/groovy,apache/groovy,apache/groovy,apache/groovy,paulk-asert/groovy,apache/incubator-groovy