build(deps): bump eslint-utils in /examples/lb3-express (#18)

Bumps [eslint-utils](https://github.com/mysticatea/eslint-utils) from 1.3.1 to 1.4.3.
- [Release notes](https://github.com/mysticatea/eslint-utils/releases)
- [Commits](mysticatea/eslint-utils@v1.3.1...v1.4.3)

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Author: dependabot[bot]