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

examples/legacy/seq2seq/seq2seq_training_args.py

@@ -17,6 +17,7 @@ from dataclasses import dataclass, field
 from typing import Optional
 
 from seq2seq_trainer import arg_to_scheduler
+
 from transformers import TrainingArguments