fix(deps): update dependency com.graphql-java-kickstart:graphql-java-kickstart to v16

Author: renovate[bot]

gradle.properties

@@ -12,7 +12,7 @@ PROJECT_DEV_NAME = Michiel Oliemans
 
 LIB_GRAPHQL_TOOLS_VER = 13.1.1
 LIB_GRAPHQL_SPRING_VER = 15.1.0
-LIB_GRAPHQL_SERVLET_VER = 15.1.0
+LIB_GRAPHQL_SERVLET_VER = 16.0.0
 
 ### Gradle Plugins