PDFBOX-4892: update commons-io

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1910289 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/parent/pom.xml b/parent/pom.xml
index d7599cb..b570096 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -75,7 +75,7 @@
             <dependency>
                 <groupId>commons-io</groupId>
                 <artifactId>commons-io</artifactId>
-                <version>2.12.0</version>
+                <version>2.13.0</version>
                 <scope>test</scope>
             </dependency>
             <dependency>