Update sbt-scoverage to 2.3.1 (#1099)

Author: softwaremill-ci

project/plugins.sbt

@@ -7,7 +7,7 @@ addSbtPlugin("com.softwaremill.sbt-softwaremill" % "sbt-softwaremill-publish" %
 addSbtPlugin("com.github.sbt" % "sbt-native-packager" % "1.11.1")
 addSbtPlugin("com.github.sbt" % "sbt-git" % "2.1.0")
 addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.3.1")
-addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.3.0")
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.3.1")
 
 libraryDependencies += "com.amazonaws" % "aws-java-sdk-s3" % "1.11.601"