dep: bump sbt-scalafmt

There was a small bugfix in here that keeps scalafmt from formatting
stuff that is in your gitignore when using from sbt.

Author: ckipp01

project/plugins.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("org.xerial.sbt" % "sbt-pack" % "0.14")
 addSbtPlugin("se.marcuslonnberg" % "sbt-docker" % "1.8.2")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.10")
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.10.0")
-addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.3")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")
 addSbtPlugin("org.scalameta" % "sbt-mdoc" % "2.2.24")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.10.1")
 addSbtPlugin("com.thesamet" % "sbt-protoc" % "1.0.6")