Merge pull request #538 from scala-steward/update/sbt-microsites-1.3.4

Update sbt-microsites from 1.3.3 to 1.3.4

Author: mergify[bot]

project/plugins.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("io.github.davidgregory084" % "sbt-tpolecat" % "0.1.17")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.27")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.2")
 addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.7")
-addSbtPlugin("com.47deg" % "sbt-microsites" % "1.3.3")
+addSbtPlugin("com.47deg" % "sbt-microsites" % "1.3.4")
 addSbtPlugin("com.eed3si9n" % "sbt-unidoc" % "0.4.3")
 addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.0")
 addSbtPlugin("ch.epfl.scala" % "sbt-version-policy" % "1.0.0-RC5")