feat: upgrade eslint from 6.8.0 to 9.8.0

Snyk has created this PR to upgrade eslint from 6.8.0 to 9.8.0.

See this package in npm:
eslint

See this project in Snyk:
https://app.snyk.io/org/ekmixon/project/a50a9592-0b85-48c9-9301-0888580e6c10?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -60,6 +60,6 @@
     "mocha": "^6.1.4",
     "nodemon": "^1.19.4",
     "nyc": "^14.1.1",
-    "eslint": "^6.8.0"
+    "eslint": "^9.8.0"
   }
 }