Deprecation warnings with Node 22

[md384]

I see a couple of DeprecationWarning when using this library under Node 22.

The first is The 'punycode' module is deprecated. Please use a userland alternative instead. - the node docs suggest using https://github.com/mathiasbynens/punycode.js instead.

The second is DeprecationWarning: crypto.Hash constructor is deprecated.. I suspect this is from

esm/src/util/md5.js

Line 7 in 6dcdee5

const hash = new Hash("md5")

which could likely be replaced with const hash = createHash("md5") (docs).