chore: bump eslint from 9.14.0 to 9.21.0

Bumps [eslint](https://github.com/eslint/eslint) from 9.14.0 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@v9.14.0...v9.21.0)

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

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

Author: dependabot[bot]

package-lock.json

@@ -67,7 +67,7 @@
     "@types/lodash.pickby": "^4.6.9",
     "@types/node": "^20.17.6",
     "concurrently": "^9.1.0",
-    "eslint": "9.14.0",
+    "eslint": "9.21.0",
     "eslint-config-rchl-base": "^2.0.4",
     "eslint-config-rchl-typescript": "^3.0.3",
     "husky": "^4.3.8",