更新element-plus依赖，修复Bug

Author: zqx

package.json

@@ -47,7 +47,7 @@
     "driver.js": "^1.3.1",
     "echarts": "^5.5.0",
     "echarts-wordcloud": "^2.1.0",
-    "element-plus": "2.7.0",
+    "element-plus": "2.8.0",
     "fast-xml-parser": "^4.3.2",
     "highlight.js": "^11.9.0",
     "jsencrypt": "^3.3.2",