* ⬆ Upgrade Swagger UI - swagger-ui-dist@4. This handles a security issue in Swagger UI itself where it could be possible to inject HTML into Swagger UI. Please upgrade as soon as you can, in particular if you expose your Swagger UI (`/docs`) publicly to non-expert users. PR [#4347](https://github.com/tiangolo/fastapi/pull/4347) by [@RAlanWright](https://github.com/RAlanWright)....

  - The /swagger.json and /swagger-2.0.0.pb-v1 schema documents, deprecated since v1.10, have been removed in favor of `/openapi/v2` ([#73148](https://github.com/kubernetes/kubernetes/pull/73148), [@liggitt](https://github.com/liggitt))

* Kubectl: Remove swagger 1.2 validation. Also removes options `--use-openapi` and `--schema-cache-dir` as these are no longer needed. ([#53232](https://github.com/kubernetes/kubernetes/pull/53232), [@apelisse](https://github.com/apelisse))

<table>
  <tr>
    <td>previous</td>
    <td>now</td>
  </tr>
  <tr>
    <td>GET /swagger.json</td>
    <td>GET /openapi/v2

      - [Cluster federation](#cluster-federation-1)
      - [Credential provider](#credential-provider)
      - [Information for Kubernetes clients (openapi, swagger, client-go)](#information-for-kubernetes-clients-openapi-swagger-client-go)
      - [Instrumentation](#instrumentation-1)
      - [Internal storage layer](#internal-storage-layer)
      - [Kubernetes Dashboard](#kubernetes-dashboard)

  If set to an empty string, caching is disabled.

- Kubectl now performs validation against OpenAPI schema instead of Swagger 1.2. If
  OpenAPI is not available on the server, it falls back to the old Swagger 1.2.

- Added Italian translation for kubectl.

- Added German translation for kubectl.

#### Scheduling

  is beta but disabled by default. ([#120198](https://github.com/kubernetes/kubernetes/pull/120198), [@pacoxu](https://github.com/pacoxu))
- `kubectl` will not support the `/swagger-2.0.0.pb-v1` endpoint that has been long deprecated. ([#119410](https://github.com/kubernetes/kubernetes/pull/119410), [@Jefftree](https://github.com/Jefftree))

* genericapiserver: turn APIContainer.SecretRoutes into a real ServeMux ([#38826](https://github.com/kubernetes/kubernetes/pull/38826), [@sttts](https://github.com/sttts))
* genericapiserver: unify swagger and openapi in config ([#38690](https://github.com/kubernetes/kubernetes/pull/38690), [@sttts](https://github.com/sttts))

### Client