Update tests from commons-io:commons-io 2.6 to 2.7.

Author: garydgregory

pom.xml

@@ -50,7 +50,7 @@
     <dependency>
       <groupId>commons-io</groupId>
       <artifactId>commons-io</artifactId>
-      <version>2.6</version>
+      <version>2.7</version>
       <scope>test</scope>
     </dependency>
     <dependency>