chore!: Upgrade to `schemars` 1.0, `kube` 2.0 and `k8s-openapi` 0.26 #4478

Job	Run time
Run Cargo Deny (bans licenses sources)	1m 9s
Run Cargo Deny (advisories)	48s
Run Cargo Udeps	1m 57s
Run RustDoc	1m 51s
Run Cargo Tests	2m 23s
All tests passed	4s
	8m 12s

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