Update sbt-typelevel, sbt-typelevel-site to 0.8.3

Author: typelevel-steward[bot]

project/plugins.sbt

@@ -3,5 +3,5 @@ addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.8")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.18.2")
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.3.1")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.8")
-addSbtPlugin("org.typelevel" % "sbt-typelevel" % "0.8.2")
-addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.8.2")
+addSbtPlugin("org.typelevel" % "sbt-typelevel" % "0.8.3")
+addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.8.3")