[Release] Update test environments for 8.11.1

[elasticmachine]

Update test environment versions to the correct Elastic Stack version.

Merge only after the release of 8.11.0.

[botelastic]

This pull request doesn't have a Team:<team> label.

[elasticmachine]

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• Duration: 90 min 19 sec

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[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 update-testing-env-next-8.11.1 upstream/update-testing-env-next-8.11.1
git merge upstream/8.11
git push upstream update-testing-env-next-8.11.1

[pierrehilbert]

/test