Update to Freemarker 2.3.33

Closes gh-959

Author: jzheaux

dependencies/build.gradle

@@ -56,7 +56,7 @@ dependencies {
 		api "org.aspectj:aspectjweaver:1.9.22.1"
 		api "org.assertj:assertj-core:3.21.0"
 		api "org.easymock:easymock:2.5.2"
-		api "org.freemarker:freemarker:2.3.31"
+		api "org.freemarker:freemarker:2.3.33"
 		api "org.hibernate:hibernate-core:5.6.9.Final"
 		api "org.hsqldb:hsqldb:2.6.1"
 		api "junit:junit:4.13.2"