Force JSONEncoder output formatting with .sortedKeys

Sources/ResgenSwift/Images/Model/ParsedImage.swift

@@ -67,7 +67,7 @@ struct ParsedImage {
 
     func generateContentJson(isVector: Bool) -> String? {
         let encoder = JSONEncoder()
-        encoder.outputFormatting = .prettyPrinted
+        encoder.outputFormatting = [.prettyPrinted, .sortedKeys]
 
         let imageContent = generateImageContent(isVector: isVector)