Bump requirements in README

Author: groue

README.md

@@ -2,7 +2,7 @@
 
 **Latest release**: July 20, 2024 • [version 0.9.0](https://github.com/groue/GRDBQuery/tree/0.9.0) • [CHANGELOG](CHANGELOG.md)
 
-**Requirements**: iOS 14.0+ / macOS 11+ / tvOS 14.0+ / watchOS 7.0+ • Swift 5.10+ / Xcode 15.3+
+**Requirements**: iOS 14.0+ / macOS 11+ / tvOS 14.0+ / watchOS 7.0+ • Swift 6+ / Xcode 16+
 
 📖 **[Documentation]**