test: Update sonnet model name in test_models.py

Author: paul-gauthier

tests/basic/test_models.py

@@ -123,7 +123,7 @@ def test_model_aliases(self):
         self.assertEqual(model.name, "gpt-3.5-turbo")
 
         model = Model("sonnet")
-        self.assertEqual(model.name, "claude-3-5-sonnet-20241022")
+        self.assertEqual(model.name, "anthropic/claude-3-7-sonnet-20250219")
 
         model = Model("haiku")
         self.assertEqual(model.name, "claude-3-5-haiku-20241022")