chore: Bump @commitlint/travis-cli from 12.1.4 to 18.4.3

Bumps [@commitlint/travis-cli](https://github.com/conventional-changelog/commitlint/tree/HEAD/@commitlint/travis-cli) from 12.1.4 to 18.4.3.
- [Release notes](https://github.com/conventional-changelog/commitlint/releases)
- [Changelog](https://github.com/conventional-changelog/commitlint/blob/master/@commitlint/travis-cli/CHANGELOG.md)
- [Commits](https://github.com/conventional-changelog/commitlint/commits/v18.4.3/@commitlint/travis-cli)

---
updated-dependencies:
- dependency-name: "@commitlint/travis-cli"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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