Update to latest scala and akka versions

Author: jlprat

.travis.yml

@@ -1,7 +1,7 @@
 language: scala
 scala:
-  - 2.11.11
-  - 2.12.2
+  - 2.11.12
+  - 2.12.4
 
 # These directories are cached to S3 at the end of the build
 cache:

src/main/g8/default.properties

@@ -1,6 +1,6 @@
 name=My Akka HTTP Project
 description=This is a seed project which creates a basic build for an Akka HTTP application using Scala.
-scala_version=2.12.3
-akka_http_version=10.0.10
-akka_version=2.5.4
+scala_version=2.12.4
+akka_http_version=10.0.11
+akka_version=2.5.8
 organization=com.example