Update sbt-microsites to v1.4.2 (#1106)

Co-authored-by: Scala Steward <[email protected]>

build.sbt

@@ -333,6 +333,7 @@ lazy val docSettings = Seq(
     "gray-lighter" -> "#F4F3F4",
     "white-color" -> "#FFFFFF"
   ),
+  micrositePushSiteWith := GHPagesPlugin,
   autoAPIMappings := true,
   docsMappingsAPIDir := "api",
   addMappingsToSiteDir(ScalaUnidoc / packageDoc / mappings, docsMappingsAPIDir),
@@ -345,14 +346,13 @@ lazy val docSettings = Seq(
     (LocalRootProject / baseDirectory).value.getAbsolutePath,
     "-diagrams"
   ),
-  git.remoteRepo := "[email protected]:twitter/algebird.git",
   makeSite / includeFilter := "*.html" | "*.css" | "*.png" | "*.jpg" | "*.gif" | "*.js" | "*.swf" | "*.yml" | "*.md"
 )
 
 // Documentation is generated for projects defined in
 // `docsSourcesAndProjects`.
 lazy val docs = project
-  .enablePlugins(MicrositesPlugin, MdocPlugin, ScalaUnidocPlugin, GhpagesPlugin)
+  .enablePlugins(MicrositesPlugin, MdocPlugin, ScalaUnidocPlugin)
   .settings(moduleName := "algebird-docs")
   .settings(sharedSettings)
   .settings(noPublishSettings)

project/plugins.sbt

@@ -5,14 +5,13 @@ resolvers ++= Seq(
   )
 )
 
-addSbtPlugin("com.47deg" % "sbt-microsites" % "1.3.4")
+addSbtPlugin("com.47deg" % "sbt-microsites" % "1.4.2")
 addSbtPlugin("com.github.sbt" % "sbt-unidoc" % "0.5.0")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.0")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.1")
-addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages" % "0.6.3")
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.0.7")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.4")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.10.4")
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.10")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.11")
 
 dependencyOverrides += "org.scala-lang.modules" %% "scala-xml" % "2.1.0"