Set Argon2id as default KDF

[Nail1684]

@_Michael

My Argon2id settings won’t change on their own when the defaults inevitably increase over time will they? I’m guessing no because with the other one they didn’t increase on their own, they had to be manually adjusted.

I would also think, a change of the defaults alone over time doesn’t force a change of current accounts. But it may be forced at some point in the future, if it is deemed necessary eventually. (just like the current Release Notes state it for PBKDF2: accounts with iterations below 600,000 will be updated automatically to 600,000 iterations now)