How to add iOS 15 support when using XCode version 12.4 or less?

So, This issue came crawling when apple released iOS 15 this September, I was using XCode 12.4 to develop my application and it does not support iOS 15 because of the signing difference I think, Is there any workaround for this issue or we should just update to XCode 13 and continue from there? The app gives an error saying - "Developer needs to update this app."

Just update to Xcode 13 should be OK.

The app gives an error saying - "Developer needs to update this app."

When do you get this error ? With which version of Xcode and iOS on device ?

How to add iOS 15 support when using XCode version 12.4 or less?
 
 
Q