Update sbt-scoverage to 2.4.2 (#156)

Author: flow-tech

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("io.github.davidgregory084" % "sbt-tpolecat" % "0.4.1")
 
 addSbtPlugin("com.github.sbt" % "sbt-git" % "2.1.0")
-addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.4.1")
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.4.2")