Merge pull request #491 from scala-steward/update/ebean-15.7.0

ebean 15.7.0 (was 15.5.2)

project/Dependencies.scala

@@ -16,7 +16,7 @@ object Dependencies {
 
   object Versions {
     val play: String   = "3.0.5"
-    val ebean          = "15.5.2"
+    val ebean          = "15.7.0"
     val typesafeConfig = "1.4.3"
   }