Changes to Get the Environment object by the EnvironmentId.

the account_name response's property pattern was changed from ^[A-Za-z0-9](?:[A-Za-z0-9\-_]{0,61}[A-Za-z0-9])$ to ^[a-zA-Z][a-zA-Z0-9]{5,25}$ for the status 200

the account_name response's property pattern was changed from ^[A-Za-z0-9](?:[A-Za-z0-9\-_]{0,61}[A-Za-z0-9])?$ to ^[A-Za-z0-9](?:[A-Za-z0-9\-_]{0,61}[A-Za-z0-9])$ for the status 200

removed the optional property domain_name from the response with the 200 status

added the optional property account_name to the response with the 200 status

endpoint added