chore(codegen): update smithy-typescript commit

Author: Steven Yuan

scripts/generate-clients/config.js

@@ -1,5 +1,5 @@
 // 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: "9972041f7d31886e035ec68bffc5f0af12512dd3",
+  SMITHY_TS_COMMIT: "77dbddd1054a2c884870c8eb3c82cc00647d6bca",
 };