chore(deps): update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -48,7 +48,7 @@
     "@types/node": "^18.19.42",
     "@types/sinon": "^17.0.3",
     "chai": "^4.5.0",
-    "eslint": "^8.57.0",
+    "eslint": "^9.8.0",
     "eslint-config-teppeis": "^19.1.2",
     "mocha": "^10.7.0",
     "npm-run-all": "^4.1.5",