Bump node-sass from 4.14.1 to 7.0.0 (#101)

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](https://github.com/sass/node-sass/compare/v4.14.1...v7.0.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -53,7 +53,7 @@
     "gulp-rename": "^2.0.0",
     "gulp-sass": "^4.1.0",
     "klaw": "^3.0.0",
-    "node-sass": "^4.14.1",
+    "node-sass": "^7.0.0",
     "plugin-error": "^1.0.1",
     "through2": "^2.0.5"
   },