code: def update_config_dict():
      return {
          "routes": [
              {
                  "name": "chat-gpt4",
                  "route_type": "llm/v1/chat",
                  "model": {
                      "name": "gpt-4",
                      "provider": "openai",
                      "config": {
                          "openai_api_key": "mykey",
                          "openai_api_base": "https://api.openai.com/v1",
                          "openai_api_version": "2023-05-15",
                          "openai_api_type": "openai",
                      },
                  },
              },
          ]
      }
  
file_path: mlflow/tests/gateway/test_runner.py
imports: from pathlib import Path
  import pytest
  from tests.gateway.tools import Gateway, save_yaml
label_desc: Use image node_id 3 for calling a global function with example usage: update_config_dict() and returns: dict