updated junit to release 4.9

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/digester/trunk@1173804 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 9a051fd..0783a9f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -187,7 +187,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.8.1</version>
+      <version>4.9</version>
       <scope>test</scope>
     </dependency>
   </dependencies>