Update sbt-site-paradox to 1.8.0

Author: scala-steward

plugin/src/sbt-test/sbt-site/can-use-theme/project/plugins.sbt

@@ -4,4 +4,4 @@ sys.props.get("project.version") match {
                          |Specify this property using the scriptedLaunchOpts -D.""".stripMargin)
 }
 
-addSbtPlugin(("com.github.sbt" % "sbt-site-paradox" % "1.7.0").exclude("com.lightbend.paradox", "sbt-paradox"))
+addSbtPlugin(("com.github.sbt" % "sbt-site-paradox" % "1.8.0").exclude("com.lightbend.paradox", "sbt-paradox"))

project/plugins.sbt

@@ -1,7 +1,7 @@
 addSbtPlugin(("com.lightbend.paradox" % "sbt-paradox"        % "0.9.2").exclude("com.typesafe.sbt", "sbt-web"))
 addSbtPlugin(("com.lightbend.paradox" % "sbt-paradox-theme"  % "0.9.2").exclude("com.typesafe.sbt", "sbt-web"))
 addSbtPlugin("com.github.sbt"         % "sbt-web"            % "1.5.8")
-addSbtPlugin(("com.github.sbt"        % "sbt-site-paradox"   % "1.7.0").exclude("com.lightbend.paradox", "sbt-paradox"))
+addSbtPlugin(("com.github.sbt"        % "sbt-site-paradox"   % "1.8.0").exclude("com.lightbend.paradox", "sbt-paradox"))
 addSbtPlugin("com.github.sbt"         % "sbt-ghpages"        % "0.9.0")
 addSbtPlugin("com.github.sbt"         % "sbt-ci-release"     % "1.12.0")
 addSbtPlugin("org.scalameta"          % "sbt-scalafmt"       % "2.6.2")