chore(deps): update devdependency eslint to v9

Author: renovate[bot]

package.json

@@ -71,7 +71,7 @@
     "@u3u/prettier-config": "^3.0.1",
     "@vitest/coverage-v8": "^0.34.1",
     "@vitest/ui": "^0.34.1",
-    "eslint": "^8.46.0",
+    "eslint": "^9.39.1",
     "execa": "^7.2.0",
     "fix-tsup-cjs": "link:",
     "lint-staged": "^13.2.3",