Update sbt-scoverage to 2.4.4

Author: scala-steward

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.1")
-addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.9.3")
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.4.4")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.0")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.10.4")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.11")