chore(deps): update dependency unplugin-vue-markdown to v28

Author: renovate[bot]

package.json

@@ -217,7 +217,7 @@
     "tsup": "^8.3.5",
     "typescript": "^5.6.3",
     "unplugin-auto-import": "^19.0.0",
-    "unplugin-vue-markdown": "^0.26.3",
+    "unplugin-vue-markdown": "^28.1.0",
     "unplugin-vue-router": "workspace:*",
     "vite": "^6.0.1",
     "vite-plugin-vue-devtools": "^7.6.7",