During server startup, prior to the server reporting healthy (via `/healthz`), not all API groups may be reported.
Wait for the server to report healthy (via `/healthz`) before depending on the information provided by the discovery APIs.
Additionally, since the information returned from the discovery APIs may change dynamically, a cache of the results should not be considered authoritative.

- Changed the node restrictions to disallow the node to change it's ownerReferences. ([#133467](https://github.com/kubernetes/kubernetes/pull/133467), [@natherz97](https://github.com/natherz97)) [SIG Auth]
- DRA: fixed a data race which, depending on timing, could have led to broken allocation of devices backing extended resources ([#133587](https://github.com/kubernetes/kubernetes/pull/133587), [@pohly](https://github.com/pohly)) [SIG Node]