Update sbt-scalafix to 0.14.7 (#285)

Author: scala-steward

project/plugins.sbt

@@ -2,5 +2,5 @@ addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.13.1")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.11.2")
 addSbtPlugin("com.github.sbt" % "sbt-native-packager" % "1.11.7")
 addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.3.1")
-addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.14.6")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.14.7")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.6.1")