Update smithy4s-aws-http4s, smithy4s-core, ... to 0.18.33 (#474)

Co-authored-by: scala-steward[bot] <417002+ etspaceman-scala-steward-app[bot]@users.noreply.github.com>
Co-authored-by: Eric Meisel <eric.steven.meisel@gmail.com>

Author: 3 people

project/plugins.sbt

@@ -6,7 +6,7 @@ addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.14.2")
 addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.3.1")
 addSbtPlugin("org.portable-scala" % "sbt-crossproject" % "1.3.2")
 addSbtPlugin(
-  "com.disneystreaming.smithy4s" % "smithy4s-sbt-codegen" % "0.18.31"
+  "com.disneystreaming.smithy4s" % "smithy4s-sbt-codegen" % "0.18.33"
 )
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.13.1")
 addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.11.0")