[pom] Update freemarker to 2.3.26-incubating

Author: hazendaz

pom.xml

@@ -92,7 +92,7 @@
     <dependency>
       <groupId>org.freemarker</groupId>
       <artifactId>freemarker</artifactId>
-      <version>2.3.23</version>
+      <version>2.3.26-incubating</version>
     </dependency>
 
     <!-- TEST -->