chore: add sass-embedded dep

Author: chiichen

package.json

@@ -18,6 +18,7 @@
     "@vuepress/utils": "2.0.0-rc.24",
     "mathjax-full": "^3.2.2",
     "mermaid": "^10.9.1",
+    "sass-embedded": "^1.89.2",
     "vue": "^3.5.12",
     "vuepress": "2.0.0-rc.24",
     "vuepress-plugin-md-enhance": "2.0.0-rc.94",