chore: Upgrade @vue/component-compiler & @vue/component-compiler-utils

BREAKING CHANGE: `@vue/[email protected]` uses `sass` instead of `node-sass`

Author: znck

Diff for: docs/faqs.md

@@ -6,7 +6,7 @@
 - **Error: Cannot find module `vue-template-compiler`?**  
   `vue-template-compiler` has a constraint that it should be exact same version as `vue` that is why it is included as peer dependency. Make sure you install `vue-template-compiler` and `vue` in your project.
 
-- **Error: Cannot find module `less` or `node-sass` or `stylus`?**  
+- **Error: Cannot find module `less` or `sass` or `stylus`?**  
   If you're using any of the style languages (other than css) supported in `.vue` file, you have to install that language's compiler.
 
 - **Error: 'default' is not exported by node_modules/vue-runtime-helpers/dist/normalize-component.js**  

Diff for: package.json

@@ -45,8 +45,8 @@
     "dist/"
   ],
   "dependencies": {
-    "@vue/component-compiler": "^3.6",
-    "@vue/component-compiler-utils": "^2.1.0",
+    "@vue/component-compiler": "^4.0.0",
+    "@vue/component-compiler-utils": "^3.0.0",
     "debug": "^4.1.1",
     "hash-sum": "^1.0.2",
     "magic-string": "^0.25.2",
@@ -71,7 +71,7 @@
     "babel-plugin-transform-es2015-modules-commonjs": "^6.26.2",
     "conventional-changelog": "^3.0.5",
     "jest": "^23.6.0",
-    "node-sass": "^4.9.0",
+    "sass": "^1.18.0",
     "postcss": "^7.0.11",
     "postcss-assets": "^5.0.0",
     "prettier": "^1.12.1",