Apply black formatting to migration

Author: marteinn

tests/testapp/migrations/0003_pagewithpolyfillcolorfield.py

@@ -8,20 +8,30 @@
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('testapp', '0002_alter_pagewithstreamfield_body'),
-        ('wagtailcore', '0094_alter_page_locale'),
+        ("testapp", "0002_alter_pagewithstreamfield_body"),
+        ("wagtailcore", "0094_alter_page_locale"),
     ]
 
     operations = [
         migrations.CreateModel(
-            name='PageWithPolyfillColorField',
+            name="PageWithPolyfillColorField",
             fields=[
-                ('page_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='wagtailcore.page')),
-                ('color', wagtail_color_panel.fields.ColorField(max_length=7)),
+                (
+                    "page_ptr",
+                    models.OneToOneField(
+                        auto_created=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        parent_link=True,
+                        primary_key=True,
+                        serialize=False,
+                        to="wagtailcore.page",
+                    ),
+                ),
+                ("color", wagtail_color_panel.fields.ColorField(max_length=7)),
             ],
             options={
-                'abstract': False,
+                "abstract": False,
             },
-            bases=('wagtailcore.page',),
+            bases=("wagtailcore.page",),
         ),
     ]