[7.15](backport #28615) chore: add build scripts to CODEOWNERS

[mergify]

This is an automatic backport of pull request #28615 done by Mergify.
Cherry-pick of 2c927f0 has failed:

On branch mergify/bp/7.15/pr-28615
Your branch is up to date with 'origin/7.15'.

You are currently cherry-picking commit 2c927f0552.
  (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:   .github/CODEOWNERS

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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[mdelapenya]

@Mergifyio refresh

[mergify]

refresh

✅ Pull request refreshed

[elasticmachine]

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[mdelapenya]

This block was not backported, adding it here by convenience