Update circe-generic-extras to 0.12.2 (#239)
Update circe-generic-extras to 0.12.2 (#239)

* Update circe-generic-extras to 0.12.2

* Update circe-generic-extras to 0.12.2

* Fix circe / circe-generic-extras split versions

pauljamescleary/scala-pet-store,pauljamescleary/scala-pet-store