[8.17](backport #2895) Change the poetry export requirement to be >= 1.8

[mergify]

Change the poetry export requirement to be >= 1.8

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This is an automatic backport of pull request #2895 done by Mergify.

[mergify]

Cherry-pick of 4b3a21b has failed:

On branch mergify/bp/8.17/pr-2895
Your branch is up to date with 'origin/8.17'.

You are currently cherry-picking commit 4b3a21b1.
  (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:   tests/pyproject.toml

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

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b mergify/bp/8.17/pr-2895 upstream/mergify/bp/8.17/pr-2895
git merge upstream/8.17
git push upstream mergify/bp/8.17/pr-2895

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b mergify/bp/8.17/pr-2895 upstream/mergify/bp/8.17/pr-2895
git merge upstream/8.17
git push upstream mergify/bp/8.17/pr-2895