Update quality tooling for formatting (#21480)

* Result of black 23.1

* Update target to Python 3.7

* Switch flake8 to ruff

* Configure isort

* Configure isort

* Apply isort with line limit

* Put the right black version

* adapt black in check copies

* Fix copies

tests/models/bart/test_modeling_flax_bart.py

@@ -33,6 +33,7 @@ if is_flax_available():
 
     import jax
     import jax.numpy as jnp
+
     from transformers.models.bart.modeling_flax_bart import (
         FlaxBartForConditionalGeneration,
         FlaxBartForQuestionAnswering,

tests/models/bart/test_tokenization_bart.py

@@ -132,7 +132,6 @@ class TestTokenizationBart(TokenizerTesterMixin, unittest.TestCase):
 
     @require_torch
     def test_special_tokens(self):
-
         src_text = ["A long paragraph for summarization."]
         tgt_text = [
             "Summary of the text.",