Update smithy-rs to release-2025-10-06 (#1368)

Updates code generator to fix the `doc_auto_cfg` issue. 

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Author: ysaito1001

config.json

@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "smithyRsVersion": "release-2025-10-02"
+    "smithyRsVersion": "release-2025-10-06"
   }
 }