Update discipline-core to 1.4.0

[scala-steward]

Updates org.typelevel:discipline-core from 1.2.0 to 1.4.0.
GitHub Release Notes - Version Diff

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Files still referring to the old version number

The following files still refer to the old version number (1.2.0).
You might want to review and update them manually.

CHANGES.md
build.sbt

Ignore future updates

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

updates.ignore = [ { groupId = "org.typelevel", artifactId = "discipline-core" } ]

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

[armanbilge]

It seems discipline rolled back to Scala 3.0.