Update scalacheck to 1.16.0

[scala-steward]

Updates org.scalacheck:scalacheck from 1.14.3 to 1.16.0. GitHub Release Notes

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

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Ignore future updates

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

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

labels: library-update, early-semver-minor, semver-spec-minor, commit-count:1