chore(deps): update dependency vuepress to v2.0.0-rc.28

Author: renovate[bot]

package.json

@@ -15,7 +15,7 @@
     "prettier": "^3.7.4",
     "pretty-quick": "^4.2.2",
     "sass": "^1.96.0",
-    "vuepress": "2.0.0-rc.27"
+    "vuepress": "2.0.0-rc.28"
   },
   "engines": {
     "node": ">=20.9.0"