Update scalatest to 3.1.0

[scala-steward]

Updates org.scalatest:scalatest from 3.0.8 to 3.1.0.
Release Notes/Changelog

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

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention me in the comments below.

Have a fantastic day writing Scala!

Ignore future updates

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

updates.ignore = [ { groupId = "org.scalatest", artifactId = "scalatest" } ]

Applied Migrations

• https://raw.githubusercontent.com/scalatest/autofix/e4de53fa40fac423bd64d165ff36bde38ce52388/3.0.x/rules/src/main/scala/org/scalatest/autofix/v3_0_x/RenameDeprecatedPackage.scala
• https://raw.githubusercontent.com/scalatest/autofix/e4de53fa40fac423bd64d165ff36bde38ce52388/3.1.x/rules/src/main/scala/org/scalatest/autofix/v3_1_x/RewriteDeprecatedNames.scala

labels: semver-minor, scalafix-migrations

[calvellido]

Currently failing due to this:

In 3.0.8 we moved Checkers under org.scalatest.prop to org.scalatestplus.scalacheck package, and deprecated Checkers under org.scalatest.prop. Checkers was still released in the ScalaTest artifact, with the org.scalatestplus.scalacheck package name. In 3.1.0, we are removing the deprecated name and the actual implementation in the new package from the ScalaTest artifact. From now on these will be released as a separate, optional module to allow ScalaTest and its ScalaCheck integration library to evolve more independently.

[calvellido]

Following the previous message, it seems like the new artifact is being published under:

org.scalatestplus.scalatestplus-scalacheck