Merge pull request #694 from scala-steward/update/sbt-dotty-0.4.5

Update sbt-dotty to 0.4.5

Author: larsrh

project/plugin.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.8.1")
 
 addSbtPlugin("com.jsuereth" % "sbt-pgp" % "2.0.1")
 
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.4")
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.5")
 
 def env(name: String): Option[String] =
   Option(System.getenv(name))