Fix --random on reset-admin-password

fixes: #7533

Author: gerrod3

CHANGES/7533.bugfix

@@ -0,0 +1 @@
+Fixed `reset-admin-password` command failing when using `--random` option on Django 5.

pulpcore/app/management/commands/reset-admin-password.py

@@ -1,3 +1,6 @@
+import string
+import secrets
+
 from getpass import getpass
 from gettext import gettext as _
 
@@ -34,7 +37,8 @@ def add_arguments(self, parser):
     def handle(self, *args, **options):
         user = User.objects.get_or_create(username="admin", is_superuser=True, is_staff=True)[0]
         if options["random"]:
-            password = User.objects.make_random_password(length=20)
+            alphabet = string.ascii_letters + string.digits
+            password = "".join(secrets.choice(alphabet) for i in range(20))
             user.set_password(password)
             user.save()
             self.stdout.write(_('Successfully set "admin" user\'s password to "%s".') % password)