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/mt5/test_modeling_flax_mt5.py

@@ -21,6 +21,7 @@ from transformers.testing_utils import require_flax, require_sentencepiece, requ
 if is_flax_available():
     import optax
     from flax.training.common_utils import onehot
+
     from transformers import AutoTokenizer, FlaxMT5ForConditionalGeneration
     from transformers.models.t5.modeling_flax_t5 import shift_tokens_right