Update requirements.txt

requirements.txt

@@ -1,11 +1,11 @@
-langchain==0.2.9
-langchain-community==0.3.29
-langchain-huggingface==0.0.3
-transformers==4.55.4
-sentence-transformers==5.1.0
-faiss-cpu==1.12.0
-gradio==5.44.1
-python-docx==1.2.0
-tqdm==4.66.0
-huggingface_hub==0.16.4
-requests==2.32.0
+langchain>=0.2.20,<0.3.0
+langchain-community>=0.3.0
+langchain-huggingface>=0.0.3
+transformers
+sentence-transformers
+faiss-cpu
+gradio
+python-docx
+tqdm
+huggingface_hub
+requests