What problem will this feature address?

I would love it if there were an option to notify the admin when an update is available to install.
I didn't see one in the notification options, and don't often check the dashboard to see one.
Thanks!

Describe the solution you'd like

Add toggle to enable notification type, to send a message that an update is available to install, on the notifications page.

Describe alternatives you've considered

None

Additional context

None

Will you send a PR to implement it?

No