Update requirements.txt

requirements.txt

@@ -3,8 +3,5 @@ pyvis>=0.3.2
 pypdf>=4.2.0
 pandas>=2.2
 networkx>=3.3
-# core library that does the heavy lifting (supports OpenAI or Groq)
 knowledge-graph-maker>=0.2.1
-# optional: if you want to explicitly pin clients (the kg-maker pulls them if needed)
-openai>=1.35
-groq>=0.6,<0.7  
+openai>=1.40,<2