Bumped minimum isort version to 5.1.0.

Fixed inner imports per isort 5.
isort 5.0.0 to 5.1.0 was unstable.

django/test/client.py

@@ -611,6 +611,7 @@ class ClientMixin:
 
     def _login(self, user, backend=None):
         from django.contrib.auth import login
+
         # Create a fake request to store login details.
         request = HttpRequest()
         if self.session:

django/test/selenium.py

@@ -70,7 +70,9 @@ class SeleniumTestCaseBase(type(LiveServerTestCase)):
 
     @classmethod
     def get_capability(cls, browser):
-        from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
+        from selenium.webdriver.common.desired_capabilities import (
+            DesiredCapabilities,
+        )
         return getattr(DesiredCapabilities, browser.upper())
 
     def create_options(self):

django/test/signals.py

@@ -175,7 +175,9 @@ def static_finders_changed(**kwargs):
 @receiver(setting_changed)
 def auth_password_validators_changed(**kwargs):
     if kwargs['setting'] == 'AUTH_PASSWORD_VALIDATORS':
-        from django.contrib.auth.password_validation import get_default_password_validators
+        from django.contrib.auth.password_validation import (
+            get_default_password_validators,
+        )
         get_default_password_validators.cache_clear()