Update requirements.txt

requirements.txt

@@ -1,6 +1,6 @@
-streamlit>=1.36.0
-pandas>=2.0
-langchain>=0.2
-langchain-community>=0.2
-python-dotenv>=1.0
-llama-cpp-python>=0.2.90
+streamlit
+pandas
+langchain
+langchain-community
+langchain-huggingface
+python-dotenv