Merge pull request #36 from scala-steward/update/play-json-2.9.2

Update play-json to 2.9.2

build.sbt

@@ -16,7 +16,7 @@ scalacOptions ++= Seq("-deprecation", "-feature")
 
 libraryDependencies ++= Seq(
   "org.sangria-graphql" %% "sangria-marshalling-api" % "1.0.4",
-  "com.typesafe.play" %% "play-json" % "2.9.1",
+  "com.typesafe.play" %% "play-json" % "2.9.2",
 
   "org.sangria-graphql" %% "sangria-marshalling-testkit" % "1.0.3" % Test,
   "org.scalatest" %% "scalatest" % "3.1.4" % Test)