Update sbt-scalajs, scalajs-compiler, ... to 1.19.0#300

scala-steward wants to merge 1 commit intoSystemFw:mainSystemFw/upperbound:mainfrom

scala-steward:update/sbt-scalajs-1.19.0scala-steward/upperbound:update/sbt-scalajs-1.19.0Copy head branch name to clipboard