Update sbt-scoverage to 2.4.2 (#394)

Author: flow-tech

project/plugins.sbt

@@ -12,4 +12,4 @@ addSbtPlugin("io.flow" % "sbt-flow-linter" % "0.0.73")
 addSbtPlugin("com.github.sbt" % "sbt-git" % "2.1.0")
 
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.6")
-addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.4.1")
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.4.2")