Fixed assets checkum dependency

util/checksum/build.gradle

@@ -4,7 +4,7 @@ apply plugin: "java"
 
 sourceSets.main.java.srcDirs = [ "src/" ]
 
-task runChecksum(dependsOn: [classes, rootProject.tasks.prepareSoundAssets, rootProject.tasks.prepareGraphicAssets]) {
+task runChecksum(dependsOn: [classes, rootProject.tasks.prepareSoundAssets, rootProject.tasks.prepareGraphicAssets, rootProject.tasks.prepareJsonAssets]) {
     doLast {
         def sourceDir = new File("${rootProject.buildDir}/assets/dest/")
         sourceDir.eachDir() { dir ->