change ignore version on freemarker

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

lint.xml

@@ -5,7 +5,7 @@
         <ignore regexp="autofillHints"/>
     </issue>
     <issue id="InvalidPackage">
-        <ignore path="**/freemarker-2.3.23.jar"/>
+        <ignore path="**/freemarker-2.3.28.jar" />
         <ignore path="**/nnio-0.2.jar"/>
         <ignore path="**/pkix-1.54.0.0.jar"/>
     </issue>