fix(deps): update dependency vuepress to v2.0.0-rc.31

Author: renovate[bot]

packages/vuepress/package.json

@@ -60,7 +60,7 @@
     "mermaid": "11.16.0",
     "sass-embedded": "1.97.3",
     "vue": "3.5.40",
-    "vuepress": "2.0.0-rc.26",
+    "vuepress": "2.0.0-rc.31",
     "vuepress-theme-hope": "2.0.0-rc.99"
   },
   "publishConfig": {