Build(deps-dev): Bump find-unused-sass-variables from 4.0.6 to 4.0.8 (#38402)

Build(deps-dev): Bump find-unused-sass-variables from 4.0.6 to 4.0.8 (#38402)

Bumps [find-unused-sass-variables](https://github.com/XhmikosR/find-unused-sass-variables) from 4.0.6 to 4.0.8.
- [Release notes](https://github.com/XhmikosR/find-unused-sass-variables/releases)
- [Commits](https://github.com/XhmikosR/find-unused-sass-variables/compare/v4.0.6...v4.0.8)

---
updated-dependencies:
- dependency-name: find-unused-sass-variables
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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