Update requirements.txt

requirements.txt

@@ -1,5 +1,4 @@
-huggingface_hub==0.22.2
-langchain==0.0.208  # Core Langchain library
+huggingface-hub>=0.23.0 langchain==0.0.208  # Core Langchain library
 langchain-core==0.3.0  # Compatible with langchain-huggingface
 langchain-huggingface==0.1.0  # Latest version to avoid conflicts
 gradio==3.41.2  # Chatbot UI framework
@@ -9,3 +8,4 @@ sentence-transformers==2.2.2  # For embeddings
 chromadb==0.4.2  # Vector store for document embeddings
 nltk==3.8.1  # Text processing
 ollama==0.3.0 # LLaMA integration with Langchain
+pydantic==2.5.2