refactor(copyright): 更新版权年份至 2026

- 统一更新所有源文件、LICENSE、pom.xml 等的版权年份至 2026

pigx-visual/pigx-codegen/src/main/resources/logback-spring.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  ~    Copyright (c) 2018-2025, lengleng All rights reserved.
+  ~    Copyright (c) 2018-2026, lengleng All rights reserved.
   ~
   ~ Redistribution and use in source and binary forms, with or without
   ~ modification, are permitted provided that the following conditions are met: