build(deps-dev): Bump eslint from 8.57.0 to 9.4.0

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.0 to 9.4.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/compare/v8.57.0...v9.4.0)

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

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

package.json

@@ -5,7 +5,7 @@
     "repository": "https://github.com/jonnybarnes/jonnybarnes.uk",
     "license": "CC0-1.0",
     "devDependencies": {
-        "eslint": "^8.57.0",
+        "eslint": "^9.4.0",
         "stylelint": "^16.6.1",
         "stylelint-config-standard": "^36.0.0"
     },