Bump eslint from 9.19.0 to 9.21.0

Bumps [eslint](https://github.com/eslint/eslint) from 9.19.0 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@v9.19.0...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

@@ -47,7 +47,7 @@
     "@types/sinon-chai": "^3.2.12",
     "chai": "^4.5.0",
     "chai-as-promised": "^7.1.2",
-    "eslint": "^9.19.0",
+    "eslint": "^9.21.0",
     "mocha": "^11.1.0",
     "proxyquire": "^2.1.3",
     "sinon": "^18.0.0",