Update plugin versions

Author: graemerocher

grails-bom/plugins.properties

@@ -2,8 +2,8 @@ hibernate=4.3.8.0.BUILD-SNAPSHOT
 mongodb=4.0.0.BUILD-SNAPSHOT
 cassandra=4.0.0.BUILD-SNAPSHOT
 neo4j=4.0.0.BUILD-SNAPSHOT
-cache=3.0.0.M2
+cache=3.0.0
 asset-pipeline=3.0.0
-scaffolding=3.0.0.M2
-fields=2.0.0.M1
-geb=1.0.0.M2
+scaffolding=3.0.0
+fields=2.0.0
+geb=1.0.0