Update sbt-scalafix, scalafix-core, ... to 0.9.6

Author: scala-steward

project/plugins.sbt

@@ -9,7 +9,7 @@ addSbtPlugin("org.portable-scala"     % "sbt-scalajs-crossproject"      % crossV
 addSbtPlugin("org.scala-native"       % "sbt-scala-native"              % scalaNativeVersion)
 addSbtPlugin("org.portable-scala"     % "sbt-scala-native-crossproject" % crossVer)
 addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module"              % "2.0.0")
-addSbtPlugin("ch.epfl.scala"          % "sbt-scalafix"                  % "0.9.5")
+addSbtPlugin("ch.epfl.scala"          % "sbt-scalafix"                  % "0.9.6")
 addSbtPlugin("com.eed3si9n"           % "sbt-buildinfo"                 % "0.9.0")
 addSbtPlugin("com.jsuereth"           % "sbt-pgp"                       % "1.1.2-1")
 addSbtPlugin("de.heikoseeberger"      % "sbt-header"                    % "5.2.0")