feat(RES-33): Generation de l'architecture compatible Swift 6 (#13)

Reviewed-on: #13

Sources/ResgenSwift/Strings/Generator/StringsFileGenerator.swift

@@ -137,9 +137,7 @@ class StringsFileGenerator {
 
             let json = try encoder.encode(rootObject)
 
-            if let jsonString = String(data: json, encoding: .utf8) {
-                return jsonString
-            }
+            return String(decoding: json, as: UTF8.self)
 
         } catch {
             debugPrint("Failed to encode: \(error)")