There is a hardcoded events calendar link

[benjaminritner]

I've not entirely sure if this is used, but I found a link that I believe needs a filter https://github.com/stellarwp/uplink/blob/main/src/Uplink/Messages/Update_Available.php#L37

[borkweb]

Just found a second one as well: https://github.com/stellarwp/uplink/blob/main/src/Uplink/Messages/Expired_Key.php#L12

[borkweb]

Those are used and definitely an oversight