Removed package versions to manage dependency conflicts

requirements.txt

@@ -1,8 +1,8 @@
-llama_index==0.11.1
-langchain-nvidia-ai-endpoints==0.2.1
-langchain-core>=0.2.22,<0.3
-llama_parse==0.5.0
-pydantic==2.8.2
-llama-index-core==0.11.1
-llama-index-embeddings-langchain==0.2.1
-langchain>=0.1.16,<0.2
+llama_index
+langchain-nvidia-ai-endpoints
+langchain-core
+llama_parse
+pydantic
+llama-index-core
+llama-index-embeddings-langchain
+langchain