Bump gulp-sass from 4.1.1 to 5.1.0
Bump gulp-sass from 4.1.1 to 5.1.0

Bumps [gulp-sass](https://github.com/dlmanning/gulp-sass) from 4.1.1 to 5.1.0.
- [Release notes](https://github.com/dlmanning/gulp-sass/releases)
- [Changelog](https://github.com/dlmanning/gulp-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/dlmanning/gulp-sass/compare/v4.1.1...v5.1.0)

---
updated-dependencies:
- dependency-name: gulp-sass
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
projek-xyz/slim-skeleton,projek-xyz/slim-skeleton