Dated references

I found a typo in _Asynchronous Programming  with SwiftUI and Combine_.

* Edition: 1st
* Page: a few different places

### What is wrong
Book mentions Xcode 13 betas in times of Xcode 14.2. It also mentions 'new in Swift 5.5' which is not wrong, but perhaps also not new in times of 5.7..

### What's the correct spelling
Not easy to suggest an update here...