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/old_test_seq2seq_examples.py

@@ -21,6 +21,7 @@ from unittest.mock import patch
 from parameterized import parameterized
 from run_eval import run_generate
 from run_eval_search import run_search
+
 from transformers.testing_utils import CaptureStdout, TestCasePlus, slow
 from utils import ROUGE_KEYS