Bump eslint from 8.20.0 to 8.21.0

Bumps [eslint](https://github.com/eslint/eslint) from 8.20.0 to 8.21.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v8.20.0...v8.21.0)

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

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

Author: dependabot[bot]

package-lock.json

@@ -48,7 +48,7 @@
     "@wordpress/browserslist-config": "^4.1.2",
     "@wordpress/eslint-plugin": "^12.8.0",
     "@wordpress/stylelint-config": "^20.0.2",
-    "eslint": "^8.20.0",
+    "eslint": "^8.21.0",
     "eslint-plugin-compat": "^4.0.2",
     "gulp": "^4.0.2",
     "gulp-clean-css": "^4.3.0",