Update sbt-microsites to 1.3.2

Author: 47erbot

project/plugins.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("com.geirsson"         % "sbt-ci-release"           % "1.5.7")
 addSbtPlugin("org.portable-scala"   % "sbt-scalajs-crossproject" % "1.0.0")
 addSbtPlugin("org.scala-js"         % "sbt-scalajs"              % "1.5.0")
 addSbtPlugin("org.scalameta"        % "sbt-scalafmt"             % "2.4.2")
-addSbtPlugin("com.47deg"            % "sbt-microsites"           % "1.3.0")
+addSbtPlugin("com.47deg"            % "sbt-microsites"           % "1.3.3")
 addSbtPlugin("org.scoverage"        % "sbt-scoverage"            % "1.6.1")
 addSbtPlugin("org.scalameta"        % "sbt-mdoc"                 % "2.2.19")
 addSbtPlugin("de.heikoseeberger"    % "sbt-header"               % "5.6.0")