Bump node-sass from 6.0.0 to 7.0.0

Bumps [node-sass](https://github.com/sass/node-sass) from 6.0.0 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@v6.0.0...v7.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Diff for: package.json

@@ -129,7 +129,7 @@
         "fibers": "^4.0.2",
         "jest": "^26.1.0",
         "jest-environment-jsdom": "25",
-        "node-sass": "^6.0.0",
+        "node-sass": "^7.0.0",
         "prettier": "2.2.1",
         "release-it": "^14.10.0",
         "sass": "^1.24.4",