chore(deps): update dependency @unplugin-vue-ce/sub-style to v1.0.0-beta.21

Author: renovate[bot]

packages/runtime/package.json

@@ -14,7 +14,7 @@
     "dev": "vite build --watch"
   },
   "devDependencies": {
-    "@unplugin-vue-ce/sub-style": "1.0.0-beta.14",
+    "@unplugin-vue-ce/sub-style": "1.0.0-beta.21",
     "@vitejs/plugin-vue": "^5.0.5",
     "vite": "^5.3.2",
     "vue": "^3.3.4",