Update plugins.sbt (#700)

Author: fedefernandez

project/plugins.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("com.github.sbt"       % "sbt-ci-release"           % "1.5.11")
 addSbtPlugin("org.portable-scala"   % "sbt-scalajs-crossproject" % "1.2.0")
 addSbtPlugin("org.scala-js"         % "sbt-scalajs"              % "1.13.0")
 addSbtPlugin("org.scalameta"        % "sbt-scalafmt"             % "2.5.0")
-addSbtPlugin("com.47deg"            % "sbt-microsites"           % "1.4.1")
+addSbtPlugin("com.47deg"            % "sbt-microsites"           % "1.4.2")
 addSbtPlugin("org.scalameta"        % "sbt-mdoc"                 % "2.3.7")
 addSbtPlugin("de.heikoseeberger"    % "sbt-header"               % "5.9.0")
 addSbtPlugin("com.alejandrohdezma" %% "sbt-github"               % "0.11.6")