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:development
...

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

Author: dependabot[bot]

package.json

@@ -34,7 +34,7 @@
     "fs-extra": "^9.0.1",
     "globby": "^11.0.1",
     "mime-types": "^2.1.27",
-    "node-sass": "^4.14.1",
+    "node-sass": "^7.0.0",
     "ora": "^5.1.0",
     "postcss": "^7.0.32",
     "postcss-cli": "^7.1.2",