fix: error 'history_messages' with LightRAG latest version

[bennoloeffler]

Description

• Fixes: Error: 'history_messages' [BUG] Error: 'history_messages' #702

in libs/ktem/ktem/index/file/graph/lightrag_pipelines.py, line 236

def build_graphrag(working_dir, llm_func, embedding_func):
    graphrag_func = LightRAG(
        working_dir=working_dir,
        llm_model_func=llm_func,
        embedding_func=embedding_func,
    )

    # newer verisons of LightRAG needs to be initialized before using
    asyncio.run(graphrag_func.initialize_storages())
    asyncio.run(initialize_pipeline_status())

    return graphrag_func

I don't really know, which version of LightRag and which version of kotaemon are compatible and I did not find any hints regarding that. Please advice, if I missed something.
I assume, the docker needs to be updated to use a new version of LightRag, too - I don't know how to...

Type of change

• New features (non-breaking change).
• Bug fix (non-breaking change).
• Breaking change (fix or feature that would cause existing functionality not to work as expected).

Checklist

• [ x] I have performed a self-review of my code.
• I have added thorough tests if it is a core feature.
• There is a reference to the original bug report and related work.
• I have commented on my code, particularly in hard-to-understand areas.
• The feature is well documented.