Hand off @ronniegeraghty CODEOWNERS to new owners

[ronniegeraghty]

Summary

Removing @ronniegeraghty from .github/CODEOWNERS as Ronnie transitions from the Azure SDK / Tools portfolio into a different role.

What changed

See the diff. For lines where removing Ronnie would leave fewer than one human owner, a replacement was added per discussion with Ronnie. All other lines simply drop his alias.

Reviewers

Tagging the existing co-owners on the affected lines for review.

Related

• Workitem: Azure/projects/424 - "Review CODEOWNERS entries in SDK repos, transfer to right new owner"
• Full handoff plan: internal doc projects/sdk-team-brain-dump/codeowners-handoff/README.md in ronniegeraghty/ronnies-agent-team

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Opened as part of the Azure SDK handoff. Marking as draft until Ronnie reviews; flip to ready-for-review once approved internally.

[ronniegeraghty]

Hi @m-nash and @JoshLove-msft, this is a small CODEOWNERS handoff (just removing me as an owner). The only failing check is Build_and_Test Build, and it's failing on the 'Check if shared source code is up-to-date' step (generated code drift), which doesn't read CODEOWNERS at all. I'm confident the failure isn't caused by this change. Could you push it through and merge when you get a chance? Thanks!

[ronniegeraghty]

Friendly re-ping on this one. It's a small CODEOWNERS handoff (just removing me as an owner). The branch is up to date with main. The only failing check is Build_and_Test Build, which fails on the 'shared source code up-to-date' step (generated code drift). That doesn't read CODEOWNERS, so I'm confident it's unrelated to this change.

@m-nash @lirenhe @ArthurMa1978 @hallipr @JoshLove-msft, could one of you review and push it through when you get a chance? Thanks!