Use psk_key instead of psk_id

[voluntas]

Fixed to use psk key instead of psk_id when using secret in the KeySchedule function.

reference

https://www.rfc-editor.org/rfc/rfc9180.html#section-5.1

def KeySchedule<ROLE>(mode, shared_secret, info, psk, psk_id):
  VerifyPSKInputs(mode, psk, psk_id)

  psk_id_hash = LabeledExtract("", "psk_id_hash", psk_id)
  info_hash = LabeledExtract("", "info_hash", info)
  key_schedule_context = concat(mode, psk_id_hash, info_hash)

  // psk_key is used instead of psk_id
  secret = LabeledExtract(shared_secret, "secret", psk)

[jedisct1]

Good catch! Thank you!