ci: make the DevOps team code owner of the CI pipeline

[orbalayla-nvidia]

Summary

• Make @NVIDIA/nbu-swx-cloudai-devops the code owner of .ci/ and .github/workflows/blossom-ci.yml, so changes to the CI pipeline and the workflow that triggers it are auto-requested from DevOps.
• The team is synced from the Access-Github-nbu-swx-cloudai-devops DL and already has Write on the repository, which GitHub requires for a code-owner team.
• The repository-wide * owners are unchanged. The new lines come after it, since the last matching pattern wins.

Test Plan

• pre-commit run --files .github/CODEOWNERS passes.

• GitHub's CODEOWNERS validator on this PR's head reports no errors, so the team resolves and has the access it needs:

  $ gh api "repos/NVIDIA/cloudai/codeowners/errors?ref=refs/pull/1069/head"
  {"errors":[]}
  

Additional Notes

CODEOWNERS only requests the review. "Require review from Code Owners" stays off in the main ruleset, because with the * line it would make one of the four listed owners mandatory on every pull request. Approval for these paths will be enforced separately with a path-scoped Required reviewers rule in the ruleset.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository: NVIDIA/cloudai/.coderabbit.yaml

Review profile: ASSERTIVE

Plan: Enterprise

Run ID: 925156f0-2b89-4ccb-8fa7-3753f3d04816

📥 Commits

Reviewing files that changed from the base of the PR and between 559e9b5 and 8927eb9.

📒 Files selected for processing (1)

• .github/CODEOWNERS

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📝 Walkthrough

Walkthrough

The CODEOWNERS file adds ownership rules for .ci/ and .github/workflows/blossom-ci.yml.

Changes

CI Path Ownership

Layer / File(s)	Summary
CI ownership rules .github/CODEOWNERS	Adds rules that assign .ci/ and .github/workflows/blossom-ci.yml to the same owner team.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to 8927e

This change only adds code owners for the CI paths, so it has no runtime impact. It requests reviews from the DevOps team on those paths. Whether approval is enforced depends on a repository ruleset outside this PR, which the author should confirm.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: assigning the DevOps team as code owner for the CI pipeline.
Description check	✅ Passed	The description directly explains the CODEOWNERS changes, access requirements, validation results, and review-enforcement behavior.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create a new PR

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