ci: fix maven publishing (#1200)

Author: richardmcclellan

configuration/publishing.gradle

@@ -17,6 +17,9 @@ apply plugin: 'maven'
 apply plugin: 'signing'
 apply plugin: 'maven-publish'
 
+version = project.ext.VERSION_NAME
+group = POM_GROUP
+
 def getReleaseRepositoryUrl() {
     return hasProperty('RELEASE_REPOSITORY_URL') ? RELEASE_REPOSITORY_URL :
             "https://aws.oss.sonatype.org/service/local/staging/deploy/maven2/"