Update sbt-scalajs, scalajs-compiler to 1.1.1 (#360)

Author: scala-steward

project/plugins.sbt

@@ -1,6 +1,6 @@
 addSbtPlugin("com.geirsson"         % "sbt-ci-release"           % "1.5.3")
 addSbtPlugin("org.portable-scala"   % "sbt-scalajs-crossproject" % "1.0.0")
-addSbtPlugin("org.scala-js"         % "sbt-scalajs"              % "1.1.0")
+addSbtPlugin("org.scala-js"         % "sbt-scalajs"              % "1.1.1")
 addSbtPlugin("org.scalameta"        % "sbt-scalafmt"             % "2.4.0")
 addSbtPlugin("com.47deg"            % "sbt-microsites"           % "1.2.1")
 addSbtPlugin("org.scoverage"        % "sbt-scoverage"            % "1.6.1")