Update scalafmt-core to 3.7.3

[typelevel-steward]

Updates org.scalameta:scalafmt-core from 3.7.2 to 3.7.3.
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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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:1

[codecov-commenter]

Codecov Report

Merging #530 (439d548) into master (8a27685) will not change coverage.
The diff coverage is n/a.

❗ Current head 439d548 differs from pull request most recent head a568f8b. Consider uploading reports for the commit a568f8b to get more accurate results

@@           Coverage Diff           @@
##           master     #530   +/-   ##
=======================================
  Coverage   99.06%   99.06%           
=======================================
  Files           8        8           
  Lines         426      426           
  Branches       77       77           
=======================================
  Hits          422      422           
  Misses          4        4           

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