Merge pull request #201 from scala-steward/update/smithy-build-1.40.0

Update smithy-build, smithy-model to 1.40.0

build.sc

@@ -437,7 +437,7 @@ object Deps {
     )
   }
   object smithy {
-    val smithyVersion = "1.37.0"
+    val smithyVersion = "1.40.0"
     val model = ivy"software.amazon.smithy:smithy-model:$smithyVersion"
     val build = ivy"software.amazon.smithy:smithy-build:$smithyVersion"
   }