fixed lint

Author: daniel-sanche

packages/google-cloud-firestore/google/cloud/firestore_v1/base_pipeline.py

@@ -724,6 +724,7 @@ def update(self, *transformed_fields: "Selectable") -> "_BasePipeline":
             A new Pipeline object with this stage appended to the stage list
         """
         return self._append(stages.Update(*transformed_fields))
+
     def define(self, *aliased_expressions: AliasedExpression) -> "_BasePipeline":
         """
         Binds one or more expressions to Variables that can be accessed in subsequent stages

packages/google-cloud-firestore/google/cloud/firestore_v1/pipeline_stages.py

@@ -515,6 +515,8 @@ def __init__(self, *transformed_fields: Selectable):
 
     def _pb_args(self) -> list[Value]:
         return [Selectable._to_value(self.transformed_fields)]
+
+
 class Define(Stage):
     """Binds one or more expressions to variables."""