Replace crypto-js with web-crypto API once `node` 20 is more standard.

[tefkah]

We are currently using crypto-js to encode your password before we send it up to PubPub.

This doesn't seem necessary, as the global crypto object is now standard in webbrowsers and node v20+.

Currently we still support node 18, but once that reaches EOL we should replace crypto-js with globalThis.crypto