Update sbt-scalafmt to 2.5.4

Author: scala-steward

project/plugins.sbt

@@ -23,5 +23,5 @@ addSbtPlugin("com.github.sbt"            % "sbt-dynver"      % "5.0.1")
 addSbtPlugin("com.github.sbt"            % "sbt-pgp"         % "2.3.1")
 addSbtPlugin("io.github.davidgregory084" % "sbt-tpolecat"    % "0.4.4")
 addSbtPlugin("org.jetbrains"             % "sbt-idea-plugin" % "3.24.0")
-addSbtPlugin("org.scalameta"             % "sbt-scalafmt"    % "2.4.5")
+addSbtPlugin("org.scalameta"             % "sbt-scalafmt"    % "2.5.4")
 addSbtPlugin("org.xerial.sbt"            % "sbt-sonatype"    % "3.11.3")