From another Similar question
An yes I did participate in that question also
The original contributor who first saw this issue elsewhere was @VikingOSX
There are several Senior Contributors experience this phantom and false Software Update post the Sonoma 14.6.1 update
At this time of writing this reply, there is no known solution that I know of to stop this issue
Can only suggest, maybe contacting Apple Directly and alerting them of this issue
If there are enough person who report this, maybe they will react more quickly with some type of fix ?
Start now and open an Apple Support Ticket as they are PAID Apple Employees to deal will these types of issues .
Product Feedback - and make it known to Apple regarding this ongoing issue
1 800 MyApple
Other location call Centres
Contact Apple for support and service