Update sbt-scalafmt to 2.4.6

Author: scala-steward

project/plugins.sbt

@@ -1,7 +1,7 @@
 addSbtPlugin("com.lightbend.lagom" % "lagom-sbt-plugin" % "1.6.5")
 addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.8.1")
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.8.2")
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.3")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")
 addSbtPlugin("com.beautiful-scala" % "sbt-scalastyle" % "1.5.0")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.29")
 addSbtPlugin("au.com.onegeek" %% "sbt-dotenv" % "2.1.227")