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/run_eval_search.py

@@ -20,6 +20,7 @@ import sys
 from collections import OrderedDict
 
 from run_eval import datetime_now, run_generate
+
 from utils import ROUGE_KEYS