Update sbt-scalafmt to 2.5.4

Author: scala-steward

project/plugins.sbt

@@ -1,7 +1,7 @@
 addSbtPlugin("com.github.sbt" % "sbt-dynver" % "5.1.0")
 addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.3.1")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.4")
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.4")
 addSbtPlugin("org.scala-sbt" % "sbt-contraband" % "0.7.0")
 
 scalacOptions += "-language:postfixOps"