chore: roll back eslint to 9

typescript-eslint/typescript-eslint#11952

Author: piquark6046

builder/package.json

@@ -20,7 +20,7 @@
     "@typescriptprime/securereq": "^1.1.0",
     "chokidar": "^5.0.0",
     "esbuild": "^0.27.3",
-    "eslint": "^10.0.0",
+    "eslint": "^9.39.2",
     "semver": "^7.7.4",
     "tldts": "^7.0.23",
     "tsx": "^4.21.0",