Update scalafmt-core to 3.8.4

[typelevel-steward]

About this PR

📦 Updates org.scalameta:scalafmt-core from 3.8.3 to 3.8.4

📜 GitHub Release Notes - Version Diff

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.

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⚙ Adjust 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" } ]

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

dependencyOverrides = [{
  pullRequests = { frequency = "30 days" },
  dependency = { groupId = "org.scalameta", artifactId = "scalafmt-core" }
}]

^{labels: library-update, early-semver-patch, semver-spec-patch, commit-count:n:3}

[danicheg]

Interestingly, what drives the Scalafmt rationale for this change

[rossabaker]

Yeah, I use this technique when the plural (-s, -es) or genitive (-'s) marker is correct in English but not in code. I don't like this change, but I like configuring scalafmt even less.

[typelevel-steward]

Superseded by #882.