chore(codegen): update for schema codegen testing

Author: kuhe

scripts/generate-clients/config.js

@@ -1,7 +1,7 @@
 // Update this commit when taking up new changes from smithy-typescript.
 module.exports = {
   // Use full commit hash as we explicitly fetch it.
-  SMITHY_TS_COMMIT: "5213dfcd6ff45c060fd6a543e1d4ef7261db5ecd",
+  SMITHY_TS_COMMIT: "d8255ac642e79117169f92d7fda81e9c4e38e128",
 };
 
 if (module.exports.SMITHY_TS_COMMIT.length < 40) {