Bump less-loader from 11.1.3 to 12.3.0

Bumps [less-loader](https://github.com/webpack-contrib/less-loader) from 11.1.3 to 12.3.0.
- [Release notes](https://github.com/webpack-contrib/less-loader/releases)
- [Changelog](https://github.com/webpack-contrib/less-loader/blob/master/CHANGELOG.md)
- [Commits](webpack/less-loader@v11.1.3...v12.3.0)

---
updated-dependencies:
- dependency-name: less-loader
  dependency-version: 12.3.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]