Update zio, zio-test, zio-test-sbt to 2.1.8#519

scala-steward wants to merge 1 commit intopolyvariant:mainpolyvariant/sttp-oauth2:mainfrom

scala-steward:update/zio-2.1.8scala-steward/sttp-oauth2:update/zio-2.1.8Copy head branch name to clipboard