Update CODEOWNERS

[sdwheeler]

PR Summary

Update CODEOWNERS

• Fixes AB#593688

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributor's guide.
• Style: This PR adheres to the style guide.

[Copilot]

Pull request overview

Updates repository-wide code ownership so that all paths (*) are owned by a single GitHub user.

Changes:

• Remove @michaeltlombardi from the global (*) CODEOWNERS entry.
• Keep @sdwheeler as the sole default code owner.

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[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

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[learn-build-service-prod]

Learn Build status updates of commit b0ab90d:

✅ Validation status: passed

File	Status	Preview URL	Details
.github/CODEOWNERS	✅Succeeded

For more details, please refer to the build report.