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/research_projects/self-training-text-classification/selftraining.py

@@ -23,12 +23,12 @@ import shutil
 from typing import List, Optional
 
 import datasets
+from accelerate import Accelerator
 from datasets import load_dataset
+from finetuning import finetune
 from tqdm.auto import tqdm
 
 import transformers
-from accelerate import Accelerator
-from finetuning import finetune
 from transformers import AutoConfig, set_seed
 from transformers.trainer_utils import IntervalStrategy