Update build.gradle

Author: yeikel

build.gradle

@@ -47,7 +47,7 @@ repositories {
 
 
 dependencies {
-    compile "com.graphql-java:graphql-java:20.1"
+    compile "com.graphql-java:graphql-java:20.2"
 
     testImplementation 'org.spockframework:spock-core:1.3-groovy-2.5'
     testImplementation('org.codehaus.groovy:groovy:2.5.13')