Add etcd version information in k8s.io/docs/setup/version-skew-policy/

[wenjiaswe]

This is a...

• Feature Request
• Bug Report

Problem:
Thanks to @liggitt who points to me in kubernetes/kubernetes#71572 (comment), that this is the right place for k8s apiserver - etcd version documentation.

Proposed Solution:

Page to Update:
https://deploy-preview-11060--kubernetes-io-master-staging.netlify.com/docs/setup/version-skew-policy/#supported-component-upgrade-order

xref:
kubernetes/kubernetes#45506
#11060

/assign @wenjiaswe
/cc @liggitt @imkin @gyuho @jpbetz

[fejta-bot]

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Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

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/lifecycle stale

[wenjiaswe]

/remove-lifecycle stale

[fejta-bot]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale

[wenjiaswe]

/remove-lifecycle stale

[sftim]

/priority backlog
Is that OK?