Upgrade sbt plugins

Upgrade sbt-assembly and sbteclipse plugins to the latest
released fix level: old releases are not accessible anymore
and the sbt build failed.

Change-Id: Id0745f5f0ed26fde4bd318e3e140c9eecff69b9e

project/plugins.sbt

diff --git a/project/plugins.sbt b/project/plugins.sbt
index e43b477..b401671 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,4 +1,4 @@
 logLevel := Level.Warn
-addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.4")
-addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.1.0")
+addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.7")
+addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.2.4")