[no-master] Upgrade to scopt 3.7.1.
[no-master] Upgrade to scopt 3.7.1.

This is the first version that supports Scala 2.13.0 (and also the
latest stable version as of this writing).

sjrd/scala-js,scala-js/scala-js,gzm0/scala-js,gzm0/scala-js,scala-js/scala-js,sjrd/scala-js,sjrd/scala-js,scala-js/scala-js