refactor: Bump eslint from 9.20.1 to 9.21.0 (#574)

Author: dependabot[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "@semantic-release/npm": "12.0.1",
     "@semantic-release/release-notes-generator": "14.0.3",
     "cross-env": "7.0.3",
-    "eslint": "9.20.1",
+    "eslint": "9.21.0",
     "jasmine": "5.6.0",
     "mongodb-runner": "5.8.0",
     "nodemon": "3.1.9",