* Fix Langchain upstream ut * Small fix * Install bigdl-llm * Update run-langchain-upstream-tests.sh * Update run-langchain-upstream-tests.sh * Update llm_unit_tests.yml * Update run-langchain-upstream-tests.sh * Update llm_unit_tests.yml * Update run-langchain-upstream-tests.sh * fix git checkout * fix --------- Co-authored-by: Zhangky11 <2321096202@qq.com> Co-authored-by: Keyan (Kyrie) Zhang <79576162+Zhangky11@users.noreply.github.com>  | 
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