Update sbt-jmh to 0.4.8 (#199)

Author: scala-steward

project/plugins.sbt

@@ -4,7 +4,7 @@ addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.3.2")
 addSbtPlugin("org.scala-js"       % "sbt-scalajs"                   % "1.20.1")
 addSbtPlugin("org.scala-native"   % "sbt-scala-native"              % "0.5.8")
 
-addSbtPlugin("pl.project13.scala" % "sbt-jmh"                       % "0.4.7")
+addSbtPlugin("pl.project13.scala" % "sbt-jmh"                       % "0.4.8")
 addSbtPlugin("com.eed3si9n"       % "sbt-assembly"                  % "2.3.1")
 addSbtPlugin("com.github.sbt"   % "sbt-native-packager"           % "1.11.3")
 addSbtPlugin("com.eed3si9n"       % "sbt-buildinfo"                 % "0.13.1")