Dates in legal person identification in EUCC

[bartbink]

https://github.com/EWC-consortium/eudi-wallet-rulebooks-and-schemas/blob/main/data-schemas/ds001-eu-company-certificate.json

In the J-Son it states the issuance date as type string and format datetime.
Then it states expiry date only the format datetime. The type : string is missing.

    "issuance_date": {
        "description": "Date and possibly time of issuance",
        "type": "string",
        "format": "datetime"
    },
    "expiry_date": {
        "description": "Date and possibly time of ODI expiration",
        "format": "datetime"
    },