bump smithy4s

Author: kubukoz

project/plugins.sbt

@@ -14,7 +14,7 @@ addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.3.1")
 
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.6.0")
 
-addSbtPlugin("com.disneystreaming.smithy4s" % "smithy4s-sbt-codegen" % "0.19.2")
+addSbtPlugin("com.disneystreaming.smithy4s" % "smithy4s-sbt-codegen" % "0.19.4")
 
 addSbtPlugin("org.polyvariant" % "smithy-trait-codegen-sbt" % "0.2.3")