Bumped deps to get working with scala 2.12. Dropped to m4 as json4s not available in m5 yet.
Bumped deps to get working with scala 2.12. Dropped to m4 as json4s not available in m5 yet.

YuvalItzchakov/avro4s,51zero/avro4s,sksamuel/avro4s,sksamuel/avro4s