Updating Dom4J to 2.1.3
diff --git a/pom.xml b/pom.xml
index c9dc348..55f5a61 100644
--- a/pom.xml
+++ b/pom.xml
@@ -60,7 +60,7 @@
     <commons.collections.version>4.4</commons.collections.version>
     <commons.lang.version>3.9</commons.lang.version>
     <commons.pool.version>2.8.0</commons.pool.version>
-    <dom4j.version>2.1.1</dom4j.version>
+    <dom4j.version>2.1.3</dom4j.version>
     <forbiddenapis.version>2.6</forbiddenapis.version>
     <hamcrest.version>2.2</hamcrest.version>
     <junit.engine.version>5.6.0</junit.engine.version>