Use 3.0.2 of cache plugin and 3.0.15 of asset-pipeline

Author: graemerocher

grails-bom/plugins.properties

@@ -2,8 +2,8 @@ hibernate=4.3.10.7
 mongodb=4.0.7
 cassandra=4.0.7
 neo4j=4.0.7
-cache=3.0.1
-asset-pipeline=3.0.11
+cache=3.0.2
+asset-pipeline=3.0.15
 scaffolding=3.1.2
 fields=2.1.1
 geb=1.0.0