Bump scss-tokenizer and node-sass (#50)

Bumps [scss-tokenizer](https://github.com/sasstools/scss-tokenizer) to 0.4.3 and updates ancestor dependency [node-sass](https://github.com/sass/node-sass). These dependencies need to be updated together.


Updates `scss-tokenizer` from 0.3.0 to 0.4.3
- [Release notes](https://github.com/sasstools/scss-tokenizer/releases)
- [Commits](sasstools/scss-tokenizer@v0.3.0...v0.4.3)

Updates `node-sass` from 7.0.1 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](sass/node-sass@v7.0.1...v7.0.3)

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

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

Author: dependabot[bot]