upgrade autorest.python version (Azure#24247)

Author: msyyc

swagger_to_sdk_config_autorest.json

@@ -2,7 +2,7 @@
   "meta": {
     "autorest_options": {
       "version": "3.7.2",
-      "use": ["@autorest/python@5.13.0", "@autorest/modelerfour@4.19.3"],
+      "use": ["@autorest/python@5.16.0", "@autorest/modelerfour@4.19.3"],
       "python": "",
       "sdkrel:python-sdks-folder": "./sdk/.",
       "python3-only": ""