[4.2.x] Refs #33476 -- Applied Black's 2023 stable style.

Black 23.1.0 is released which, as the first release of the year,
introduces the 2023 stable style. This incorporates most of last year's
preview style.

https://github.com/psf/black/releases/tag/23.1.0

Backport of 097e3a70c1 from main

tests/postgres_tests/array_default_migrations/0001_initial.py

@@ -3,7 +3,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = []
 
     operations = [

tests/postgres_tests/array_default_migrations/0002_integerarraymodel_field_2.py

@@ -3,7 +3,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("postgres_tests", "0001_initial"),
     ]

tests/postgres_tests/array_index_migrations/0001_initial.py

@@ -3,7 +3,6 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = []
 
     operations = [

tests/postgres_tests/migrations/0001_setup_extensions.py

@@ -31,7 +31,6 @@ else:
 
 
 class Migration(migrations.Migration):
-
     operations = [
         BloomExtension(),
         BtreeGinExtension(),

tests/postgres_tests/migrations/0002_create_test_models.py

@@ -18,7 +18,6 @@ from ..models import TagField
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
         ("postgres_tests", "0001_setup_extensions"),
     ]

tests/postgres_tests/test_array.py

@@ -864,7 +864,6 @@ class TestChecks(PostgreSQLSimpleTestCase):
 
 @unittest.skipUnless(connection.vendor == "postgresql", "PostgreSQL specific tests")
 class TestMigrations(TransactionTestCase):
-
     available_apps = ["postgres_tests"]
 
     def test_deconstruct(self):

tests/postgres_tests/test_unaccent.py

@@ -5,7 +5,6 @@ from .models import CharFieldModel, TextFieldModel
 
 
 class UnaccentTest(PostgreSQLTestCase):
-
     Model = CharFieldModel
 
     @classmethod