Update freemarker dependency in ask-sdk-freemarker to 2.3.34

Author: pepri

ask-sdk-freemarker/pom.xml

@@ -42,7 +42,7 @@
         <dependency>
             <groupId>org.freemarker</groupId>
             <artifactId>freemarker</artifactId>
-            <version>2.3.28</version>
+            <version>2.3.34</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>