Update sbt-scalafmt to 2.4.6

[scala-steward]

Updates org.scalameta:sbt-scalafmt from 2.4.3 to 2.4.6.
GitHub Release Notes - Version Diff

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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Have a fantastic day writing Scala!

Ignore future updates

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

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

labels: sbt-plugin-update, early-semver-patch, semver-spec-patch, commit-count:1

[codecov-commenter]

Codecov Report

Merging #424 (4538d86) into master (ea2a3fb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #424   +/-   ##
=======================================
  Coverage   99.51%   99.51%           
=======================================
  Files           8        8           
  Lines         412      412           
  Branches       41       41           
=======================================
  Hits          410      410           
  Misses          2        2           

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