[8.19] (backport #18156) Release notes for 8.18.7

[mergify]

---

This is an automatic backport of pull request #18156 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of f713bd1 has failed:

On branch mergify/bp/8.19/pr-18156
Your branch is up to date with 'origin/8.19'.

You are currently cherry-picking commit f713bd13.
  (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/static/releasenotes.asciidoc

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

[donoghuc]

Oops, this should not have been ported. Closing