Update sbt-scoverage to 1.7.3

Author: scala-steward

project/plugins.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("com.lightbend.paradox"     % "sbt-paradox"             % "0.9.2")
 addSbtPlugin("com.typesafe.sbt"          % "sbt-site"                % "1.4.1")
 addSbtPlugin("com.typesafe.sbt"          % "sbt-ghpages"             % "0.6.3")
 addSbtPlugin("com.geirsson"              % "sbt-ci-release"          % "1.5.7")
-addSbtPlugin("org.scoverage"             % "sbt-scoverage"           % "1.7.2")
+addSbtPlugin("org.scoverage"             % "sbt-scoverage"           % "1.7.3")
 addSbtPlugin("com.timushev.sbt"          % "sbt-updates"             % "0.5.3")
 addSbtPlugin("pl.project13.scala"        % "sbt-jmh"                 % "0.4.0")
 addSbtPlugin("de.heikoseeberger"         % "sbt-header"              % "5.6.0")