Update sbt-scalafmt to 2.5.4 (NomadBlacky#345)

Author: scala-steward

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.13.1")
 
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.4")
 
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.11.0")