chore: remove stray dependency

Author: idleberg

package.json

@@ -52,7 +52,6 @@
 "concurrently": "^9.2.1",
 "gulp": "^5.0.1",
 "knip": "^5.68.0",
-"npm-run-all2": "^8.0.4",
 "prettier": "^3.6.2",
 "publint": "^0.3.15",
 "tsdown": "^0.16.1",