Bump swift-tools-version to 6.2

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ivanvorobei

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:5.3
+// swift-tools-version:6.2
 
 import PackageDescription
 
@@ -24,5 +24,5 @@ let package = Package(
             ]
         )
     ],
-    swiftLanguageVersions: [.v5]
+    swiftLanguageModes: [.v6]
 )