chore: update sidetree-core (max delta, proof, hash, cas uri)

[sandrask]

Included:

• new protocol parameters: max delta, max proof, max hash plus related REST validation and batch validation
• validation of max operation size moved to operation parser (before un-marshalling)
• move canonicalId to did document metadata
• validate CAS file URIs (new protocol parameter max CAS URI length)
• add-services will now fail if there are duplicate services
• advance update commitment if possible
• support for service endpoint as object