Build(deps-dev): Bump stylelint-config-twbs-bootstrap (twbs#40786)

Bumps [stylelint-config-twbs-bootstrap](https://github.com/twbs/stylelint-config-twbs-bootstrap) from 14.2.0 to 15.0.0.
- [Release notes](https://github.com/twbs/stylelint-config-twbs-bootstrap/releases)
- [Commits](twbs/stylelint-config-twbs-bootstrap@v14.2.0...v15.0.0)

---
updated-dependencies:
- dependency-name: stylelint-config-twbs-bootstrap
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]