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/longt5/test_modeling_longt5.py

@@ -71,7 +71,6 @@ class LongT5ModelTester:
         decoder_layers=None,
         large_model_config_path="google/long-t5-local-large",
     ):
-
         self.parent = parent
         self.batch_size = batch_size
         self.encoder_seq_length = encoder_seq_length
@@ -502,7 +501,6 @@ class LongT5ModelTester:
 
 @require_torch
 class LongT5ModelTest(ModelTesterMixin, GenerationTesterMixin, unittest.TestCase):
-
     all_model_classes = (LongT5Model, LongT5ForConditionalGeneration) if is_torch_available() else ()
     all_generative_model_classes = (LongT5ForConditionalGeneration,) if is_torch_available() else ()
     fx_compatible = False
@@ -919,7 +917,6 @@ class LongT5EncoderOnlyModelTester:
         scope=None,
         large_model_config_path="google/long-t5-local-large",
     ):
-
         self.parent = parent
         self.batch_size = batch_size
         self.encoder_seq_length = encoder_seq_length