Update dependency ch.epfl.scala:sbt-scalafix to v0.9.29

Author: renovate-bot

project/plugins.sbt

@@ -1,7 +1,7 @@
 addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.5")
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.10.0")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.3.4")
-addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.25")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.29")
 
 Compile / unmanagedSourceDirectories +=
   (ThisBuild / baseDirectory).value.getParentFile /