fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-FLATTED-15518041

Author: snyk-bot

package.json

@@ -69,7 +69,7 @@
     "eslint-plugin-unused-imports": "^4.1.4"
   },
   "devDependencies": {
-    "eslint": ">=8.0.0",
+    "eslint": ">=9.0.0",
     "jest": "^30.2.0"
   },
   "peerDependencies": {