Merge pull request #306 from scala-steward/update/sbt-scalafmt-2.4.2

Update sbt-scalafmt to 2.4.2

Author: mergify[bot]

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("org.scala-js"      % "sbt-scalajs"   % "1.1.1")
-addSbtPlugin("org.scalameta"     % "sbt-scalafmt"  % "2.4.0")
+addSbtPlugin("org.scalameta"     % "sbt-scalafmt"  % "2.4.2")
 addSbtPlugin("org.xerial.sbt"    % "sbt-sonatype"  % "3.9.4")
 addSbtPlugin("com.github.gseitz" % "sbt-release"   % "1.0.13")
 addSbtPlugin("com.jsuereth"      % "sbt-pgp"       % "2.0.1")