SLING-7335 Update Groovy to 2.4.13
diff --git a/pom.xml b/pom.xml
index 924f774..25f0455 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,10 +35,10 @@
   <description>Support for scripting with Groovy</description>
 
   <properties>
-    <groovy.version>2.4.9</groovy.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <sling.java.version>8</sling.java.version>
+    <groovy.version>2.4.13</groovy.version>
   </properties>
 
   <scm>