Bump junit from 4.12 to 4.13.1 (#482)

Author: Anders Breid

pom.xml

@@ -198,7 +198,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>