build(deps-dev): bump eslint from 7.3.1 to 7.26.0 (react-bootstrap#715)

Bumps [eslint](https://github.com/eslint/eslint) from 7.3.1 to 7.26.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v7.3.1...v7.26.0)

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

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