chore(deps): update rust crate k8s-openapi to 0.20.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
k8s-openapi	dev-dependencies	minor	0.19.0 -> 0.20.0
k8s-openapi	dependencies	minor	0.19.0 -> 0.20.0

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Release Notes

Arnavion/k8s-openapi (k8s-openapi)

### [`v0.20.0`](https://togithub.com/Arnavion/k8s-openapi/blob/HEAD/CHANGELOG.md#v0200-2023-09-07) [Compare Source](https://togithub.com/Arnavion/k8s-openapi/compare/v0.19.0...v0.20.0) #### k8s-openapi - BREAKING CHANGE: This release removes all associated methods of resource types that mapped API operations. For example, there is no more `fn api::core::v1::Pod::list()`, and all types related to API operations like `ListOptional` and `ResponseBody` have also been removed. See [https://github.com/Arnavion/k8s-openapi/issues/149](https://togithub.com/Arnavion/k8s-openapi/issues/149) for more details. - BREAKING CHANGE: Added support for Kubernetes 1.28 under the `v1_28` feature. - BREAKING CHANGE: Dropped support for Kubernetes 1.20 and 1.21. Corresponding Kubernetes API server versions: - v1.22.17 - v1.23.17 - v1.24.17 - v1.25.13 - v1.26.8 - v1.27.5 - v1.28.1 #### k8s-openapi-codegen-common - BREAKING CHANGE: `write_operation` and other things related to emitting API operations have been removed. #### k8s-openapi-derive - BREAKING CHANGE: The generated resource type no longer has associated clientset methods for listing etc. ***

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