Update play-json to 2.6.13
Update play-json to 2.6.13

rossabaker/http4s,aeons/http4s,ChristopherDavenport/http4s,ChristopherDavenport/http4s,ChristopherDavenport/http4s,rossabaker/http4s,http4s/http4s,aeons/http4s,aeons/http4s