use ollama 0.3.3 and specify in requirements.txt as llamaindex does not support ollama 0.4 at this moment

Author: wzdavid

Diff for: requirements.txt

@@ -3,6 +3,7 @@ streamlit==1.39.0
 langchain==0.3.4
 langchain-community==0.3.3
 langchain_openai==0.2.3
+ollama==0.3.3
 llama-index-embeddings-huggingface==0.3.1
 llama-index-embeddings-langchain==0.2.1
 llama-index-llms-langchain==0.4.2