Notify administrators of new settings on upgrade

[gerhard (Gerhard Schlager)]

I second that request. I even mentioned something like that before, but I guess it got buried in another topic (my fault).

Defaulting to discourse.org CDN for avatars is a privacy and security risk

What I want is to filter the settings and see only those that were not available in the last version or where the default value changed.

Something like this:
https://assets-meta-cdck-prod-meta.s3.dualstack.us-west-1.amazonaws.com/optimized/3X/a/6/a64580eb3a4dc324d6314fe88a10d06380896908_1_690x131.png