fix: release notes for OpenShift

[razvan]

Release Notes for SDP YY.M.X

Caution

Please assign the applicable scheduled-for/YY.M.X label.

Tip

• Use the commented out template headings in release-notes.
• Begin each sentence on a new line. This helps with review suggestions and diffing.
• Use xrefs for links to other parts of the documentation so that they remain valid across versions.

#### Release note compilation tasks
- [ ] Check [Issues](https://github.com/search?q=org%3Astackabletech+label%3Arelease-note%2Crelease-note%2Faction-required+label%3Arelease%YY.M.X%2Cscheduled-for%YY.M.X&type=issues) for Product and Platform release notes
- [ ] Check [PRs](https://github.com/search?q=org%3Astackabletech+label%3Arelease-note%2Crelease-note%2Faction-required+label%3Arelease%YY.M.X%2Cscheduled-for%YY.M.X&type=pullrequests) for Product and Platform release notes
- [ ] Optionally check the [Changelogs](https://github.com/search?q=org%3Astackabletech+path%3A*CHANGELOG.md+%22YY.M.X%22&type=code) in case release notes were missed
- [ ] Compile list of new product versions that are supported and compile a list of new product features to include in the Release Highlights
- [ ] Upgrade guide: Document how to use stackablectl to uninstall all and install new release
- [ ] Upgrade guide: Document how to use helm to uninstall all and install new release
- [ ] Upgrade guide: Every breaking change of all our operators
- [ ] Upgrade guide: List removed product versions (if there are any)
- [ ] Upgrade guide: List removed operators (if there are any)
- [ ] Upgrade guide: List supported Kubernetes versions

Each of the following tasks focuses on a specific goal and should be done once the items above have been completed.

#### Release note review tasks
- [ ] Check overall document structure
- [ ] Check spelling, grammar, and correct wording
- [ ] Check that internal links are xrefs
- [ ] Check that rendered links are valid
- [ ] Check that each sentence begins on a new line

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[adwk67]

is 4.15 included in our "range"?

[razvan]

closing in favor of #707 (review)