Align JUnit version with core (4.11)

There's an incompatibility between JUnit 4.9 and 4.10 [1] related to
@Rule. Hopefully this update resolves the recent build errors claiming
that "Field context must implement MethodRule".

https://github.com/junit-team/junit/issues/357
diff --git a/releng/org.eclipse.rap.incubator.releng/parent/pom.xml b/releng/org.eclipse.rap.incubator.releng/parent/pom.xml
index 56045db..a3c4af9 100644
--- a/releng/org.eclipse.rap.incubator.releng/parent/pom.xml
+++ b/releng/org.eclipse.rap.incubator.releng/parent/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  Copyright (C) 2011, 2014 EclipseSource and others.
+  Copyright (C) 2011, 2015 EclipseSource and others.
   All rights reserved. This program and the accompanying materials
   are made available under the terms of the Eclipse Public License v1.0
   which accompanies this distribution, and is available at
@@ -24,8 +24,8 @@
     <tycho-extras-version>${tycho-version}</tycho-extras-version>
     <signing-plugin-version>1.0.4</signing-plugin-version>
     <surefire-version>2.15</surefire-version>
-    <junit-version>4.8.2</junit-version>
-    <mockito-version>1.9.5</mockito-version>
+    <junit-version>4.11</junit-version>
+    <mockito-version>1.9.5</m4ockito-version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <rap-repository>http://download.eclipse.org/rt/rap/nightly/runtime/</rap-repository>
     <rap-incubator-repository>http://download.eclipse.org/rt/rap/incubator/nightly/</rap-incubator-repository>