Bump node-sass from 4.13.1 to 7.0.0

Bumps [node-sass](https://github.com/sass/node-sass) from 4.13.1 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@v4.13.1...v7.0.0)

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

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

Author: dependabot[bot]

package.json

@@ -18,7 +18,7 @@
     "lodash": "^4.17.15",
     "mapbox-gl": "^1.7.0",
     "mobility-toolbox-js": "^1.3.9",
-    "node-sass": "^4.13.1",
+    "node-sass": "^7.0.0",
     "ol": "6.2.1",
     "prop-types": "^15.7.2",
     "query-string": "^6.12.1",