[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/admin_widgets/tests.py

@@ -75,6 +75,7 @@ class AdminFormfieldForDBFieldTests(SimpleTestCase):
         Helper to call formfield_for_dbfield for a given model and field name
         and verify that the returned formfield is appropriate.
         """
+
         # Override any settings on the model admin
         class MyModelAdmin(admin.ModelAdmin):
             pass
@@ -339,7 +340,6 @@ class AdminForeignKeyRawIdWidget(TestDataMixin, TestCase):
         )
 
     def test_invalid_target_id(self):
-
         for test_str in ("Iñtërnâtiônàlizætiøn", "1234'", -1234):
             # This should result in an error message, not a server exception.
             response = self.client.post(
@@ -908,7 +908,6 @@ class RelatedFieldWidgetWrapperTests(SimpleTestCase):
 
 @override_settings(ROOT_URLCONF="admin_widgets.urls")
 class AdminWidgetSeleniumTestCase(AdminSeleniumTestCase):
-
     available_apps = ["admin_widgets"] + AdminSeleniumTestCase.available_apps
 
     def setUp(self):
@@ -1108,7 +1107,6 @@ class DateTimePickerSeleniumTests(AdminWidgetSeleniumTestCase):
 
             # Test with every locale
             with override_settings(LANGUAGE_CODE=language_code):
-
                 # Open a page that has a date picker widget
                 url = reverse("admin:admin_widgets_member_change", args=(member.pk,))
                 self.selenium.get(self.live_server_url + url)