Update sbt-scalafmt to 2.4.6

Author: scala-steward

project/plugins.sbt

@@ -3,7 +3,7 @@ addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.1.2")
 addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages" % "0.6.3")
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.9.2")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.3")
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.5")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.0.1")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.33")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.10")