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

tests/model_fields/models.py

@@ -212,6 +212,7 @@ class GenericIPAddress(models.Model):
 # These models aren't used in any test, just here to ensure they validate
 # successfully.
 
+
 # See ticket #16570.
 class DecimalLessThanOne(models.Model):
     d = models.DecimalField(max_digits=3, decimal_places=3)