langchain-cli[patch]: Update to work with langchain 0.3 (#26403)

Update to work with pydantic 2 / langchain 0.3

libs/cli/langchain_cli/integration_template/integration_template/chat_models.py

@@ -116,7 +116,7 @@ class Chat__ModuleName__(BaseChatModel):
     Tool calling:
         .. code-block:: python
 
-            from langchain_core.pydantic_v1 import BaseModel, Field
+            from pydantic import BaseModel, Field
 
             class GetWeather(BaseModel):
                 '''Get the current weather in a given location'''
@@ -144,7 +144,7 @@ class Chat__ModuleName__(BaseChatModel):
 
             from typing import Optional
 
-            from langchain_core.pydantic_v1 import BaseModel, Field
+            from pydantic import BaseModel, Field
 
             class Joke(BaseModel):
                 '''Joke to tell user.'''

libs/cli/langchain_cli/integration_template/integration_template/tools.py

@@ -5,8 +5,8 @@ from typing import Optional, Type
 from langchain_core.callbacks import (
     CallbackManagerForToolRun,
 )
-from langchain_core.pydantic_v1 import BaseModel
 from langchain_core.tools import BaseTool
+from pydantic import BaseModel
 
 
 class __ModuleName__Input(BaseModel):
@@ -62,7 +62,7 @@ class __ModuleName__Tool(BaseTool):
         .. code-block:: python
 
             # TODO: output of invocation
-    """ # noqa: E501
+    """  # noqa: E501
 
     # TODO: Set tool name and description
     name: str = "TODO: Tool name"