Password rehash on authentication if auto encoder settings changed & legacy password hashes migration
config/services.yaml
parameters:
# Tweak these two values according to server hardware. It is recommended that server response doesn't take more than
# 1 second during "normal" login.
# Feel free to ignore the 1 second limit for important passwords (e.g. admin account), you would then have to create a
# dedicated encoder for admin users, with higher values for these two settings.
# See https://symfony.com/doc/current/security/named_encoders.html