feat: upgrade langchain (#430)

Co-authored-by: jyong <718720800@qq.com>

api/core/chain/llm_router_chain.py

@@ -1,15 +1,16 @@
 """Base classes for LLM-powered router chains."""
 from __future__ import annotations
 
-import json
 from typing import Any, Dict, List, Optional, Type, cast, NamedTuple
 
+from langchain.base_language import BaseLanguageModel
+from langchain.callbacks.manager import CallbackManagerForChainRun
 from langchain.chains.base import Chain
 from pydantic import root_validator
 
 from langchain.chains import LLMChain
 from langchain.prompts import BasePromptTemplate
-from langchain.schema import BaseOutputParser, OutputParserException, BaseLanguageModel
+from langchain.schema import BaseOutputParser, OutputParserException
 
 from libs.json_in_md_parser import parse_and_check_json_markdown
 
@@ -51,8 +52,9 @@ class LLMRouterChain(Chain):
             raise ValueError
 
     def _call(
-        self,
-        inputs: Dict[str, Any]
+            self,
+            inputs: Dict[str, Any],
+            run_manager: Optional[CallbackManagerForChainRun] = None,
     ) -> Dict[str, Any]:
         output = cast(
             Dict[str, Any],