Update sbt-scala-native-crossproject to 1.3.1

[typelevel-steward]

Updates org.portable-scala:sbt-scala-native-crossproject from 1.2.0 to 1.3.1.
GitHub Release Notes - Version Diff

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

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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.portable-scala", artifactId = "sbt-scala-native-crossproject" } ]

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

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

labels: sbt-plugin-update, early-semver-minor, semver-spec-minor, version-scheme:semver-spec, commit-count:1