update copyright to 2025- zh-Hans

Author: navaneethsnair1

src/main/content/_i18n/zh-Hans.yml

@@ -29,7 +29,7 @@ pages:
   support: 支持
   blog: 博客
 footer:
-  copyright: Copyright IBM Corp. 2017, 2024
+  copyright: Copyright IBM Corp. 2017, 2025
   privacy_policy: 隐私策略
   license: 许可证
   logos: 洛戈斯