fix: Increase MCP client timeout to 120s

The `extract_file_data` step was timing out after 30 seconds when processing larger or more complex files, causing an McpError.
This change increases the BasicMCPClient timeout to 120 seconds, providing a more stable window for the server to complete its work

Author: nick-galluzzo

src/notebookllama/workflow.py

@@ -6,7 +6,7 @@
 from llama_index.tools.mcp import BasicMCPClient
 from typing import Annotated, List, Union
 
-MCP_CLIENT = BasicMCPClient(command_or_url="http://localhost:8000/mcp")
+MCP_CLIENT = BasicMCPClient(command_or_url="http://localhost:8000/mcp", timeout=120)
 
 
 class FileInputEvent(StartEvent):