Build(deps-dev): Bump grunt-eslint from 25.0.0 to 26.0.0 (#2648)

Bumps [grunt-eslint](https://github.com/sindresorhus/grunt-eslint) from 25.0.0 to 26.0.0.
- [Release notes](https://github.com/sindresorhus/grunt-eslint/releases)
- [Commits](sindresorhus/grunt-eslint@v25.0.0...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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -49,7 +49,7 @@
     "grunt-contrib-cssmin": "^5.0.0",
     "grunt-contrib-uglify": "^5.2.2",
     "grunt-contrib-watch": "^1.1.0",
-    "grunt-eslint": "^25.0.0",
+    "grunt-eslint": "^26.0.0",
     "grunt-html": "^17.1.0",
     "grunt-jsonlint": "^3.0.0",
     "grunt-lintspaces": "^0.12.0",