Merge pull request #48 from scala-steward/update/zio-1.0.0-RC20

Update zio, zio-test, zio-test-sbt to 1.0.0-RC20

Author: adamgfraser

build.sbt

@@ -29,7 +29,7 @@ inThisBuild(
 addCommandAlias("fmt", "all scalafmtSbt scalafmt test:scalafmt")
 addCommandAlias("check", "all scalafmtSbtCheck scalafmtCheck test:scalafmtCheck")
 
-val zioVersion = "1.0.0-RC19-2"
+val zioVersion = "1.0.0-RC20"
 
 lazy val root = project
   .in(file("."))