Update Swift version to 5.9 in documentation and badges [Skip CI]

Author: guitaripod

README.md

@@ -13,7 +13,7 @@ A comprehensive Swift SDK for the [speedrun.com](https://www.speedrun.com) API,
 
 - 🚀 **Complete API Coverage** - All speedrun.com API endpoints
 - 🔒 **Type-Safe** - Leverages Swift's strong type system
-- ⚡ **Modern Swift** - Built with async/await and Swift 6.1+
+- ⚡ **Modern Swift** - Built with async/await and Swift 5.9
 - 🌍 **Cross-Platform** - macOS, iOS, tvOS, watchOS, and Linux
 - 📦 **Zero Dependencies** - Uses only native Swift libraries
 - 📖 **Fully Documented** - Complete DocC documentation
@@ -133,7 +133,7 @@ For more detailed examples, see the [Command Manual](manual.md).
 
 ## Requirements
 
-- Swift 6.1+
+- Swift 5.9
 - macOS 12.0+ / iOS 15.0+ / tvOS 15.0+ / watchOS 8.0+ / Linux
 
 ## CLI & Docker

landing-page/index.html

@@ -413,7 +413,7 @@ <h3>Docker</h3>
                     <h4>SpeedrunKit</h4>
                     <p>A comprehensive Swift SDK for the speedrun.com API</p>
                     <div class="badges">
-                        <img src="https://img.shields.io/badge/Swift-6.1-orange.svg" alt="Swift 6.1">
+                        <img src="https://img.shields.io/badge/Swift-6.1-orange.svg" alt="Swift 5.9">
                         <img src="https://img.shields.io/badge/platform-macOS%20%7C%20Linux%20%7C%20iOS%20%7C%20tvOS%20%7C%20watchOS-lightgrey.svg" alt="Platforms">
                         <img src="https://img.shields.io/badge/license-MIT-green.svg" alt="MIT License">
                     </div>
@@ -447,4 +447,4 @@ <h4>Community</h4>
 
     <script src="js/main.js"></script>
 </body>
-</html>
+</html>