Update dependency eslint to v9

Update eslint from 8.57.1 to 9.20.1

Change-type: patch

Author: balena-renovate[bot]

package.json

@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "bluebird": "^3.7.2",
-    "eslint": "^8.31.0",
+    "eslint": "^9.0.0",
     "file-disk": "^8.0.0",
     "mocha": "^10.2.0",
     "prettier": "^3.0.0"