Documentation about how to manage multiple kubespray Version

[naivary]

What would you like to be added

It would be nice to have in the documentation how multiple versions of kubespray can be managed and also how the migration between those kubespray versions is possible.

Why is this needed

Better management of the different Versions based on the official best practice given by the documentation.

[spatterIight]

This document was enough for me -> https://github.com/kubernetes-sigs/kubespray/blob/master/docs/operations/upgrades.md

Although, that is not to say it cannot be improved.