Update specs2-scalacheck to 5.6.3 in series/2.x

[typelevel-steward]

About this PR

📦 Updates org.specs2:specs2-scalacheck from 5.5.8 to 5.6.3

Usage

✅ Please merge!

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.

Configure Scala Steward for your repository with a .scala-steward.conf file.

Have a fantastic day writing Scala!

⚙ Adjust future updates

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

updates.ignore = [ { groupId = "org.specs2", artifactId = "specs2-scalacheck" } ]

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

dependencyOverrides = [{
  pullRequests = { frequency = "30 days" },
  dependency = { groupId = "org.specs2", artifactId = "specs2-scalacheck" }
}]

^{labels: library-update, early-semver-minor, semver-spec-minor, version-scheme:early-semver, commit-count:1}

[satorg]

Looks like this PR requires ScalaJS v1.19.0 to let the actions pass.

[satorg]

After I upgraded ScalaJS to v1.19.0, all the checks started passing.
However, I'm not sure it would be a correct move for now since the upstream dependency "discipline" is still on ScalaJS v1.18.

[typelevel-steward]

Superseded by #677.