Bump eslint from 9.20.1 to 9.21.0

Bumps [eslint](https://github.com/eslint/eslint) from 9.20.1 to 9.21.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v9.20.1...v9.21.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -2,7 +2,7 @@
   "dependencies": {
     "@stylistic/eslint-plugin": "^4.0.1",
     "csso-cli": "^4.0.2",
-    "eslint": "^9.20.1",
+    "eslint": "^9.21.0",
     "html-minifier-terser": "^7.2.0",
     "stylelint": "^16.14.1",
     "stylelint-config-standard": "^37.0.0",