Bump freemarker from 2.3.29 to 2.3.30

Bumps freemarker from 2.3.29 to 2.3.30.

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

build.gradle

@@ -74,7 +74,7 @@ ext {
         "sqlite"                     : "org.xerial:sqlite-jdbc:3.30.1",
         //code generator
         "velocity"                   : "org.apache.velocity:velocity-engine-core:2.2",
-        "freemarker"                 : "org.freemarker:freemarker:2.3.29",
+        "freemarker"                 : "org.freemarker:freemarker:2.3.30",
         "beetl"                      : "com.ibeetl:beetl:3.0.19.RELEASE",
         "swagger-annotations"        : "io.swagger:swagger-annotations:1.6.0",
         //cache