Upgrade sbt-scoverage from 1.9.3 to 2.3.1

Author: scala-steward

project/plugins.sbt

@@ -2,7 +2,7 @@
 logLevel := Level.Warn
 
 // https://github.com/scoverage/sbt-scoverage/releases
-addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.9.3")
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.3.1")
 
 // https://github.com/scoverage/sbt-coveralls/releases
 addSbtPlugin("org.scoverage" % "sbt-coveralls" % "1.3.5")