Bump eslint from 9.18.0 to 9.21.0 (#133)

Bumps [eslint](https://github.com/eslint/eslint) from 9.18.0 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@v9.18.0...v9.21.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -30,7 +30,7 @@
     "@types/node": "22.13.5",
     "@types/react": "18.3.12",
     "@types/react-dom": "18.3.1",
-    "eslint": "9.18.0",
+    "eslint": "9.21.0",
     "eslint-config-next": "^15.1.0"
   },
   "engines": {