[rhacs-docs-4.5] ROX-24162: Upgrade instructions for 4.5+

[openshift-cherrypick-robot]

This is an automated cherry-pick of #77179

/assign kcarmichael08

[openshift-ci-robot]

@openshift-cherrypick-robot: Ignoring requests to cherry-pick non-bug issues: ROX-24162

In response to this:

This is an automated cherry-pick of #77179

/assign kcarmichael08

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[ocpdocs-previewbot]

🤖 Tue Jun 11 20:10:32 - Prow CI generated the docs preview:

https://77333--ocpdocs-pr.netlify.app/openshift-acs/latest/upgrading/upgrade-helm.html

[openshift-ci]

@openshift-cherrypick-robot: all tests passed!

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