name of controllers that can be turned on/off that are passed to the `--controllers`
  flag (e.g., `pod-garbage-collector-controller`). The old names (eg `podgc`) are
  also accepted and aliased to the new names. ([#115813](https://github.com/kubernetes/kubernetes/pull/115813), [@atiratree](https://github.com/atiratree))
- `kubeadm`: Introduced a new feature gate `UpgradeAddonsBeforeControlPlane` to

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- Fixed EndpointSlice port name validation to match Endpoint port name validation (allowing port names longer than 15 characters) ([#84481](https://github.com/kubernetes/kubernetes/pull/84481), [@robscott](https://github.com/robscott))