Reading Get admin notification from logs? - #4 by JammyDodger made me think of this topic again. I think you could also use the “Schedule a PM with Data Explorer results” or “Schedule a post in a topic with Data Explorer results” automation script and a data explorer query to receive notifications on changes on site settings by system.
Something like
SELECT subject, previous_value, new_value, updated_at
FROM user_histories uh
where uh.action = 3
AND uh.acting_user_id = -1
AND uh.updated_at > CURRENT_TIMESTAMP - INTERVAL '60 minutes'
order by updated_at desc
Then you set up the automation with a recurrence matching the interval in the query, and skip if there are no results to avoid noise.
You could also improve the query to filter for the exact subject, but I thought maybe other automatic changes are interesting as well.