Fix missing freemarker version property

Co-authored-by: benemart <benedicte.martinez@cea.fr>

pom.xml

@@ -134,6 +134,7 @@
         <xom.version>1.3.4</xom.version>
 		<xdocreport.version>2.0.2</xdocreport.version>
 		<xerces.version>2.12.0</xerces.version>
+        <freemarker.upgraded.version>2.3.30</freemarker.upgraded.version>
 
         <!-- Web Pack -->
         <node.version>v12.4.0</node.version>