Update sbt-scoverage to 2.2.0 (#58)

Author: scala-steward

project/plugins.sbt

@@ -1,6 +1,6 @@
 addSbtPlugin("com.github.sbt" % "sbt-release" % "1.4.0")
 
-addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.1.1")
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.2.0")
 
 addSbtPlugin("com.github.sbt" % "sbt-github-actions" % "0.23.0")