Update scalafmt-core to 2.4.2

[scala-steward]

Updates org.scalameta:scalafmt-core from 2.3.2 to 2.4.2.
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.

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 = "scalafmt-core" } ]

labels: library-update, semver-minor

[codecov-io]

Codecov Report

Merging #3315 into master will increase coverage by 0.2%.
The diff coverage is 95.65%.

@@           Coverage Diff            @@
##           master   #3315     +/-   ##
========================================
+ Coverage    93.2%   93.4%   +0.2%     
========================================
  Files         377     378      +1     
  Lines        7604    7539     -65     
  Branches      199     225     +26     
========================================
- Hits         7087    7042     -45     
+ Misses        517     497     -20

Flag	Coverage Δ
#scala_version_212	93.48% <95.4%> (?)
#scala_version_213	93.18% <95.65%> (-0.02%)	⬇️

Impacted Files	Coverage Δ
...ore/src/main/scala/alleycats/syntax/foldable.scala	0% <0%> (ø)	⬆️
laws/src/main/scala/cats/laws/discipline/Eq.scala	34.37% <0%> (+1.53%)	⬆️
core/src/main/scala/cats/instances/queue.scala	100% <100%> (ø)	⬆️
laws/src/main/scala/cats/laws/FlatMapLaws.scala	100% <100%> (ø)	⬆️
core/src/main/scala/cats/Monad.scala	95.83% <100%> (-0.47%)	⬇️
...src/main/scala-2.13+/cats/instances/lazyList.scala	100% <100%> (ø)	⬆️
core/src/main/scala/cats/data/Chain.scala	98.46% <100%> (-0.02%)	⬇️
core/src/main/scala/cats/data/NonEmptyChain.scala	92.92% <100%> (ø)	⬆️
core/src/main/scala/cats/Eval.scala	98.82% <100%> (-0.02%)	⬇️
core/src/main/scala/cats/instances/function.scala	100% <100%> (ø)	⬆️
... and 48 more

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[travisbrown]

I'm weakly 👎 on this. Personally I don't mind the {}-to() change in general, except for a few things like Either.catchNonFatal { ... }, and especially forAll { ... } in tests, and to my eye those changes really hurt readability. My vote would be we change the config to avoid that particular rewrite.

[travisbrown]

Superseded by #3337.