Update scalafmt-core to 3.0.8

[scala-steward]

Updates org.scalameta:scalafmt-core from 3.0.3 to 3.0.8. GitHub Release Notes - Version Diff

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

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Files still referring to the old version number

The following files still refer to the old version number (3.0.3). You might want to review and update them manually.

.github/workflows/format.yml

Ignore future updates

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

updates.ignore = [ { groupId = "org.scalameta", artifactId = "scalafmt-core" } ]

labels: library-update, early-semver-patch, semver-spec-patch, old-version-remains