**Summary**: This issue is used to track the iteration tasks of infrastructure upgrading. **Iteration Tasks**: - [x] Adopt [CLOWarden](https://github.com/cncf/clowarden) to manage access. - [x] Registering [a GitHub App](https://docs.github.com/en/apps/creating-github-apps/registering-a-github-app/registering-a-github-app) under organization `karmada-io`. (@RainbowMango) - [x] Setup the policy and initial configuration. (@RainbowMango, #167) - [x] Enable CLOWarden service - Prow bot upgrade - [ ] Introduce new labels for testing PRs. ([#5506](https://github.com/karmada-io/karmada/issues/5506)) - [ ] Add `do-not-merge/invalid-commit-message` to `tide`. (After https://github.com/kubernetes-sigs/prow/issues/571) - [ ] Enable [cherrypicker](https://github.com/kubernetes-sigs/prow/tree/main/cmd/external-plugins/cherrypicker) external plugin for cherry-pick automation. * Consider also enable `cherry-pick-approved` or `cherry-pick-unapproved` plugin for label automation - [ ] Adot automatic merge strategy(not sure yet)([#6497](https://github.com/karmada-io/karmada/issues/6497))