[main] (backport #18247) Release notes for 9.0.8

[mergify]

---

This is an automatic backport of pull request #18247 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 82ff1f7 has failed:

On branch mergify/bp/main/pr-18247
Your branch is up to date with 'origin/main'.

You are currently cherry-picking commit 82ff1f76.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   docs/release-notes/index.md

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[github-actions]

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Just comment with:

• run docs-build : Re-trigger the docs validation. (use unformatted text in the comment!)

[github-actions]

🔍 Preview links for changed docs

• docs/release-notes/index.md

[mergify]

This pull request has not been merged yet. Could you please review and merge it @? 🙏