Bump junit from 4.11 to 4.13.1 in /test/projects/multi-module/module2 (#948)

test/projects/multi-module/module2/pom.xml

@@ -23,7 +23,7 @@
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
-      <version>4.11</version>
+      <version>4.13.1</version>
       <scope>test</scope>
     </dependency>
   </dependencies>