Passwords will be automatically re-hashed on sign-in.
All new password hashes will be argon2 by default.
This uses argon2id and is not configurable.
In the very unlikely case someone has more specific needs,
a fork is recommended.
ChangeLog: Added
Co-authored-by: Chloe Kudryavtsev <code@toast.bunkerlabs.net>
Reviewed-on: #308