Update the install guide for CKF 1.9

[NohaIhab]

Context

As part of the 1.9 release epic, our documentation needs to be updated to work with the new release version and dependencies versions.

What needs to get done

Update the install guide for CKF 1.9/stable release

Definition of Done

The install guide is updated for 1.9/stable

[syncronize-issues-to-jira[bot]]

Thank you for reporting us your feedback!

The internal ticket has been created: https://warthogs.atlassian.net/browse/KF-5982.

This message was autogenerated

[DnPlas]

This item was completed by @mvlassis in https://charmed-kubeflow.io/docs/install.