Fixed the issue with self and HfApi

tools.py

@@ -1,6 +1,6 @@
 from smolagents import Tool
 import random
-from huggingface_hub import HfApi
+from huggingface_hub import list_models
 
 class WeatherInfoTool(Tool):
     name = "weather_info"
@@ -38,7 +38,7 @@ class HubStatsTool(Tool):
     def forward(self, author: str):
         try:
             # List models from the specified author, sorted by downloads
-            models = list(HfApi.list_models(author=author, sort="downloads", limit=1))
+            models = list(list_models(author=author, sort="downloads"))
             
             if models:
                 model = models[-1]