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>

package.json

@@ -22,7 +22,7 @@
         "dayjs": "^1.9.7",
         "express": "^4.17.1",
         "next": "9.4.4",
-        "node-sass": "^4.14.1",
+        "node-sass": "^7.0.0",
         "react": "16.13.1",
         "react-dom": "16.13.1",
         "socket.io": "^2.4.0",