Update a group

{
  "data": {
    "id": "string",
    "type": "contacts",
    "name": "VIP Customers",
    "description": "string",
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  }
}

{
  "error": {
    "code": "validation_failed",
    "message": "Validation failed"
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "Missing API key"
  }
}

{
  "error": {
    "code": "subscription_required",
    "message": "This feature is not available in your current subscription. Please upgrade to a higher plan"
  }
}

{
  "error": {
    "code": "forbidden",
    "message": "No permission"
  }
}

{
  "error": {
    "code": "not_found",
    "message": "Not found"
  }
}

{
  "error": {
    "code": "conflict",
    "message": "Group is assigned to an assistant"
  }
}

{
  "error": {
    "code": "rate_limit_exceeded",
    "message": "Rate limit exceeded"
  }
}

{
  "error": {
    "code": "internal_error",
    "message": "An unexpected error occurred."
  }
}