Update sbt-scalajs to 1.13.1

[scalameta-bot]

Updates org.scala-js:sbt-scalajs from 1.13.0 to 1.13.1.
GitHub Release Notes - Version Diff

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Adjust future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "org.scala-js", artifactId = "sbt-scalajs" } ]

Or, add this to slow down future updates of this dependency:

dependencyOverrides = [{
  pullRequests = { frequency = "30 days" },
  dependency = { groupId = "org.scala-js", artifactId = "sbt-scalajs" }
}]

labels: sbt-plugin-update, early-semver-patch, semver-spec-patch, commit-count:1