Update sbt-microsites to 1.1.2 (#348)

Author: scala-steward

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("com.47deg"                 % "sbt-org-policies" % "0.12.0-M3")
-addSbtPlugin("com.47deg"                 % "sbt-microsites"   % "1.1.0")
+addSbtPlugin("com.47deg"                 % "sbt-microsites"   % "1.1.2")
 addSbtPlugin("com.eed3si9n"              % "sbt-buildinfo"    % "0.9.0")
 addSbtPlugin("org.scoverage"             % "sbt-scoverage"    % "1.6.1")
 addSbtPlugin("org.scalameta"             % "sbt-mdoc"         % "2.1.1")