Update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -44,7 +44,7 @@
     "aws-cdk-lib": "^2.194.0",
     "constructs": "^10.0.0",
     "esbuild": "^0.25.5",
-    "eslint": "^8.40.0",
+    "eslint": "^9.0.0",
     "jest": "^30.0.0",
     "prettier": "^3.5.3",
     "ts-jest": "^29.1.0",