Bump scss-tokenizer and node-sass

Bumps [scss-tokenizer](https://github.com/sasstools/scss-tokenizer) and [node-sass](https://github.com/sass/node-sass). These dependencies needed to be updated together.

Updates `scss-tokenizer` from 0.2.3 to 0.4.3
- [Release notes](https://github.com/sasstools/scss-tokenizer/releases)
- [Commits](https://github.com/sasstools/scss-tokenizer/compare/v0.2.3...v0.4.3)

Updates `node-sass` from 4.14.1 to 7.0.3
- [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...v7.0.3)

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

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

package.json

@@ -41,7 +41,7 @@
     "jest": "^25.3.0",
     "jest-junit-reporter": "^1.1.0",
     "jest-pnp-resolver": "^1.2.1",
-    "node-sass": "^4.14.1",
+    "node-sass": "^7.0.3",
     "postcss-loader": "^3.0.0",
     "postcss-preset-env": "^6.7.0",
     "sass-loader": "^8.0.2",