Gusto embedded response from introspection.refresh_token expects created_at to be str but in JSON response is int fails pydantic validation

[jrzerr]

Gusto embedded failing pydantic validation, output from /oauth/token is like:

{
    "access_token": "access-token-here",
    "token_type": "Bearer",
    "expires_in": 7200,
    "refresh_token": "refresh-token-here",
    "scope": "public scope here...",
    "created_at": 1766098962
}

Authentication type expects created_at to be str not int. Pydantic validation fails.

gusto-python-client/gusto_embedded/src/gusto_embedded/models/authentication.py

Line 41 in 4a49689

created_at: Optional[str] = None

I am on release 0.2.4 of gusto_embedded