Upgrade junit from 4.11 to 4.13

Author: slachiewicz

pom.xml

@@ -142,7 +142,7 @@ under the License.
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.11</version>
+      <version>4.13</version>
       <scope>test</scope>
     </dependency>
   </dependencies>