Update requirements.txt

requirements.txt

@@ -1,6 +1,7 @@
 langchain>=1.0.0
 langgraph>=1.0.0
-langchain_ollama
-langchain_text_splitters
-langchain_chroma
-requests
+langchain_ollama>=0.1.0
+langchain_text_splitters>=0.1.0
+langchain_chroma>=0.1.0
+beautifulsoup4>=4.12.0
+requests>=2.31.0