chore: Update core `Link` to support `digestMultibase`. Fixes #408
Created by: un-cefact-github-app[bot]
NOTE: Setting to draft until we see the validations running below.
This PR updates UNTP core to use the digestMultibase
property of VCDM instead of custom HashDigest
/ HashType
properties on SecureLink
.
See https://github.com/uncefact/spec-untp/issues/408 Resave to test trigger.