Bump node-sass from 4.14.1 to 7.0.0

Bumps [node-sass](https://github.com/sass/node-sass) from 4.14.1 to 7.0.0.
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](sass/node-sass@v4.14.1...v7.0.0)

---
updated-dependencies:
- dependency-name: node-sass
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -30,7 +30,7 @@
   "dependencies": {
     "core-js": "^3.6.5",
     "js-beautify": "^1.8.9",
-    "node-sass": "^4.11.0",
+    "node-sass": "^7.0.0",
     "sass-loader": "^7.1.0",
     "vue-highlightjs": "^1.3.3",
     "vue-resize-directive": "^1.1.4",