- The `kubectl debug` is able to create ephemeral containers in pre-1.22 clusters with the `EphemeralContainers` feature enabled. Note that versions of kubectl prior to 1.22 are unable to create ephemeral containers in clusters version 1.22 and greater due to an API change. ([#103292](https://github.com/kubernetes/kubernetes/pull/103292), [@verb](https://github.com/verb))

* Bug fix: Clusters with GCE feature 'DiskAlphaAPI' enabled were unable to dynamically provision GCE PD volumes. ([#59447](https://github.com/kubernetes/kubernetes/pull/59447), [@verult](https://github.com/verult))



# v1.8.9

* Kubeadm will now include the missing certificate key if it is unable to find an expected key during `kubeadm join` when used with the `--experimental-control-plane` flow ([#76636](https://github.com/kubernetes/kubernetes/pull/76636), [@mdaniel](https://github.com/mdaniel))

* 🐛 Fix `jsonable_encoder` alters `json_encoders` of Pydantic v1 objects. PR [#4972](https://github.com/fastapi/fastapi/pull/4972) by [@aboubacs](https://github.com/aboubacs).
* 🐛 Reenable `allow_arbitrary_types` when only 1 argument is used on the API endpoint. PR [#13694](https://github.com/fastapi/fastapi/pull/13694) by [@rmawatson](https://github.com/rmawatson).