Retrieves all users of a hub board.
curl --request GET \ --url https://platform.versori.com/api/switchboard/v1alpha1/organisations/{organisationId}/hubs/{hubId}/boards/{boardId}/users \ --header 'Authorization: <api-key>'
[ { "userId": "<string>", "boardId": "<string>", "createdAt": "2023-11-07T05:31:56Z", "updatedAt": "2023-11-07T05:31:56Z", "deletedAt": "2023-11-07T05:31:56Z" } ]