Update akka-stream-testkit, akka-testkit to 2.6.12#312

scala-steward wants to merge 1 commit intoj5ik2o:masterj5ik2o/reactive-aws-clients:masterfrom

scala-steward:update/akka-stream-testkit-2.6.12scala-steward/reactive-aws-clients:update/akka-stream-testkit-2.6.12Copy head branch name to clipboard