Update app.py

updated the authentication to use HfApi instead of login to fix this error
Traceback (most recent call last):
File "/home/user/app/app.py", line 23, in <module>
login(api_token) # Authenticate with Hugging Face
TypeError: 'module' object is not callable

app.py

@@ -6,7 +6,7 @@ from transformers import pipeline
 from sentence_transformers import SentenceTransformer
 import faiss
 import numpy as np
-import huggingface_hub as login
+import huggingface_hub as HfApi
 import re
 import unicodedata
 from dotenv import load_dotenv
@@ -20,7 +20,7 @@ assert os.getenv("TOGETHER_API_KEY"), "api key missing"
 api_token = os.getenv("HUGGINGFACEHUB_API_TOKEN")
 print(api_token)
 if api_token:
-    login(api_token)  # Authenticate with Hugging Face
+    HfApi().set_access_token(api_token)  # Authenticate with Hugging Face
 
 
 # Load LLaMA-2 Model