This plugin sends notifications when core packages or plugins are outdated, so you know when you should update them.
The plugin name is recursivetree/seat-package-notifications and the standard plugin installation steps should be enough.
To get notified about outdated plugins, just add the Outdated Packages/Plugins notification to a notification group.
No affiliation is required.
Per default, notifications are sent out once a day.
This can be adjusted by changing the schedule for package-notifications:check.