fix: formatting

Author: alessiocastrica

alpaca/common/models.py

@@ -8,6 +8,5 @@ class ValidateBaseModel(BaseModel, validate_assignment=True):
     it or forget to specify it in our models where we want assignment validation
     """
 
-
     def __repr__(self):
         return pprint.pformat(self.model_dump(), indent=4)