MPIR-439 update commons-io to 2.12.0 (#56)

Author: elharo

pom.xml

@@ -461,7 +461,7 @@ under the License.
     <dependency>
       <groupId>commons-io</groupId>
       <artifactId>commons-io</artifactId>
-      <version>2.11.0</version>
+      <version>2.12.0</version>
       <scope>test</scope>
     </dependency>
   </dependencies>