Update copyright year in ai_interface.go

Signed-off-by: Zhiyuan Zhao(赵志远) <hejunqier@gmail.com>

Author: KariHall619

pkg/server/ai_interface.go

@@ -1,5 +1,5 @@
 /*
-Copyright 2024 API Testing Authors.
+Copyright 2025 API Testing Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -55,4 +55,4 @@ type PluginResponse struct {
 	Success bool        `json:"success"` // Whether request succeeded
 	Data    interface{} `json:"data"`    // Response data
 	Error   string      `json:"error"`   // Error message if failed
-}
+}