refactor: 升级vite至v6版本，升级sass至最新版，重构主题写法，弃用@pureadmin/theme (#1188)

* refactor: 升级`vite`至`v6`版本，升级`sass`至最新版，重构主题写法，删除`@pureadmin/theme`

src/views/about/columns.tsx

@@ -82,7 +82,7 @@ export function useColumns() {
       className: "pure-version",
       cellRenderer: () => {
         return (
-          <a href="https://pure-admin.github.io/pure-admin-doc" target="_blank">
+          <a href="https://pure-admin.cn/" target="_blank">
             <span style="color: var(--el-color-primary)">文档链接</span>
           </a>
         );