build(deps-dev): bump grunt-eslint from 24.3.0 to 26.0.0

Bumps [grunt-eslint](https://github.com/sindresorhus/grunt-eslint) from 24.3.0 to 26.0.0.
- [Release notes](https://github.com/sindresorhus/grunt-eslint/releases)
- [Commits](sindresorhus/grunt-eslint@v24.3.0...v26.0.0)

---
updated-dependencies:
- dependency-name: grunt-eslint
  dependency-version: 26.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]