Update setup.py for dev

Author: aravind-segu

setup.py

@@ -18,7 +18,7 @@
                               "yapf", "pycodestyle", "autoflake", "isort", "wheel",
                               "ipython", "ipywidgets", "requests-mock", "pyfakefs",
                               "databricks-connect", "pytest-rerunfailures", "openai", 
-                              "langchain-openai"],
+                              'langchain-openai; python_version > "3.7"'],
                       "notebook": ["ipython>=8,<9", "ipywidgets>=8,<9"],
                       "openai": ["openai", 'langchain-openai; python_version > "3.7"']},
       author="Serge Smertin",