chore: upgrade smithy-kotlin and models/partitions (#772)

Author: lucix-aws

.changes/83025735-b135-4e70-a5f9-26d3e542512d.json

@@ -0,0 +1,5 @@
+{
+    "id": "83025735-b135-4e70-a5f9-26d3e542512d",
+    "type": "misc",
+    "description": "Upgrade smithy-kotlin and sync service models and partitions."
+}