[8.9](backport #3169) Skip versions newer than version under test for upgrade tests

[mergify]

This is an automatic backport of pull request #3169 done by Mergify.
Cherry-pick of 3de585e has failed:

On branch mergify/bp/8.9/pr-3169
Your branch is up to date with 'origin/8.9'.

You are currently cherry-picking commit 3de585e784.
  (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:   testing/integration/upgrade_test.go

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/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2023-08-04T08:02:33.278+0000

• Duration: 24 min 22 sec

Test stats 🧪

Test	Results
Failed	0
Passed	6007
Skipped	23
Total	6030

💚 Flaky test report

Tests succeeded.

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[pchila]

@Mergifyio rebase

[mergify]

rebase

❌ Base branch update has failed

Git reported the following error:

Rebasing (1/1)
Auto-merging testing/integration/upgrade_test.go
CONFLICT (content): Merge conflict in testing/integration/upgrade_test.go
error: could not apply 949b833b0... Skip versions newer than version under test for upgrade tests (#3169)
hint: Resolve all conflicts manually, mark them as resolved with
hint: "git add/rm <conflicted_files>", then run "git rebase --continue".
hint: You can instead skip this commit: run "git rebase --skip".
hint: To abort and get back to the state before "git rebase", run "git rebase --abort".
Could not apply 949b833b0... Skip versions newer than version under test for upgrade tests (#3169)

err-code: A3FC1

[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/8.9/pr-3169 upstream/mergify/bp/8.9/pr-3169
git merge upstream/8.9
git push upstream mergify/bp/8.9/pr-3169

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.684% (75/76)	👍
Files	67.045% (177/264)	👍
Classes	66.263% (328/495)	👍
Methods	53.173% (1014/1907)	👎 -0.028
Lines	39.06% (11558/29590)	👎 -0.096
Conditionals	100.0% (0/0)	💚

[pchila]

buildkite test this