Update scala, sbt and akka version to the latest.

akka-bbb-apps/project/Dependencies.scala

akka-bbb-apps/project/build.properties

akka-bbb-apps/project/plugins.sbt

akka-bbb-fsesl/project/Dependencies.scala

akka-bbb-fsesl/project/build.properties

akka-bbb-fsesl/project/plugins.sbt

akka-bbb-transcode/project/Dependencies.scala

akka-bbb-transcode/project/plugins.sbt

bbb-apps-common/project/Dependencies.scala

bbb-apps-common/project/build.properties

bbb-apps-common/project/plugins.sbt

bbb-common-message/project/Dependencies.scala

bbb-common-message/project/build.properties

bbb-common-message/project/plugins.sbt

bbb-common-web/project/Dependencies.scala

bbb-common-web/project/build.properties

bbb-common-web/project/plugins.sbt

bbb-fsesl-client/project/Dependencies.scala

bbb-fsesl-client/project/build.properties

bbb-fsesl-client/project/plugins.sbt