build(deps): bump less from 3.11.3 to 3.12.0

Bumps [less](https://github.com/less/less.js) from 3.11.3 to 3.12.0.
- [Release notes](https://github.com/less/less.js/releases)
- [Changelog](https://github.com/less/less.js/blob/master/CHANGELOG.md)
- [Commits](less/less.js@v3.11.3...v3.12.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]