• Fetch notifications from the CDN and chache them.

    Returns Promise<
        {
            notifications: {
                commands?: string[];
                cta?: { label: string; url: string };
                frequency: "always" | "once" | "once_a_day" | "once_a_week";
                id: string;
                maxDate?: string;
                maxVersion?: string;
                message: string;
                minDate?: string;
                minVersion?: string;
                ownerChannel: string;
                surface?: string;
                title?: string;
                type: "error" | "info" | "warning";
            }[];
        },
    >

    A string with the notifications.