Update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -27,7 +27,7 @@
   },
   "homepage": "https://github.com/uniibu/queuing#readme",
   "devDependencies": {
-    "eslint": "6.7.2",
+    "eslint": "9.21.0",
     "nyc": "^14.1.1",
     "tape": "4.11.0"
   },