autogen Update GraphRAG version

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Issue body

GraphRAG made some API changes since 1.2.0. We need to catch up with the latest version.

Also update the autogen version in the sample: https://github.com/microsoft/autogen/blob/main/python/samples/agentchat_graphrag/requirements.txt

Related: #6201

Apr 04 '25 22:04 ekzhu

I will try to have a look soon.

Apr 04 '25 22:04 lspinheiro

"run Autogen and GraphRAG sample, report error: ModuleNotFoundError: No module named 'graphrag.config.config_file_loader'" the issue still exist after upgrading GraphRAG version. Details: https://github.com/microsoft/autogen/issues/6201#issuecomment-2993449791

Jun 23 '25 04:06 cuckootan

same issue from 0.6.1 to GraphRAG 2.0 above

python -c "from autogen_ext.tools.graphrag import GlobalSearchTool, LocalSearchTool; print('Impor t successful')"

Traceback (most recent call last): File "", line 1, in File "python3.12/site-packages/autogen_ext/tools/graphrag/init.py", line 9, in from ._global_search import GlobalSearchTool, GlobalSearchToolArgs, GlobalSearchToolReturn File "python3.12/site-packages/autogen_ext/tools/graphrag/_global_search.py", line 8, in from graphrag.config.config_file_loader import load_config_from_file ModuleNotFoundError: No module named 'graphrag.config.config_file_loader

Jun 26 '25 13:06 cv-marvin