Bump junit from 4.11 to 4.13.1

Change-Id: I6f0c1777a2d8f153e79f1fc9a8af1abfa395f53d
diff --git a/pom.xml b/pom.xml
index 02d1fcc..7ff1ccb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -254,7 +254,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.11</version>
+            <version>4.13.1</version>
         </dependency>
         <dependency>
             <groupId>com.github.stephenc.jcip</groupId>