Merge pull request #2278 from scala-steward/update/sbt-scalafmt-2.5.5

Update sbt-scalafmt to 2.5.5

Author: jatcwang

project/plugins.sbt

@@ -10,5 +10,5 @@ addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.7")
 addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.10.0")
 addSbtPlugin("org.typelevel" % "sbt-tpolecat" % "0.5.2")
 addSbtPlugin("org.scalameta" % "sbt-mdoc" % "2.7.1")
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.4")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.5")
 addDependencyTreePlugin