SDK-5914 updates swift persions package.swift podspec and readmem.md

Author: NandanPrabhu

JWTDecode.podspec

@@ -19,5 +19,5 @@ Pod::Spec.new do |s|
   s.visionos.deployment_target = '1.0'
 
   s.source_files = 'JWTDecode/*.swift'
-  s.swift_versions = ['5.9']
+  s.swift_versions = ['6.0.2', '6.0.3', '6.1']
 end

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.9
+// swift-tools-version:6.0.2
 
 import PackageDescription
 

README.md

@@ -27,8 +27,8 @@ Migrating from v2? Check the [Migration Guide](V3_MIGRATION_GUIDE.md).
 ### Requirements
 
 - iOS 14.0+ / macOS 11.0+ / tvOS 14.0+ / watchOS 7.0+
-- Xcode 15.x
-- Swift 5.9+
+- Xcode 16.x
+- Swift 6.0+
 
 ### Installation