chore: sync maintainers with cozystack team

[IvanHunters]

Summary

Sync CODEOWNERS and maintainers.yaml with the actual cozystack team.

The current files contain a large number of stale entries inherited from the dot-project template (controller-tools, kubeapps and unrelated kubernetes contributors) that have no relation to cozystack. This PR removes them.

Compared to #2, this PR additionally retains active Aenix contributors that hold the maintainer role on this metadata repository and on cozystack/cozystack, but are not listed in cozystack/cozystack/MAINTAINERS.md:

• @IvanHunters
• @androndo
• @lexfrei
• @myasnikovdaniil
• @sircthulhu
• @kvapsova

Result

project-maintainers team after this PR:

• Core maintainers from cozystack/cozystack/MAINTAINERS.md: @aobort, @gecube, @kingdonb, @klinch0, @kvaps, @lllamnyp, @matthieu-robin, @mattia-eleuteri, @nbykov0, @tym83
• Active Aenix contributors: @IvanHunters, @androndo, @lexfrei, @myasnikovdaniil, @sircthulhu, @kvapsova

The reviewers team (entirely populated with unrelated kubernetes contributors) is removed.

Summary by CodeRabbit

• Chores
  • Updated repository code ownership configuration to reflect current maintainers.
  • Updated project team membership records in the maintainers list.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: fdc7caeb-7188-40c1-98c5-3a2571499700

📥 Commits

Reviewing files that changed from the base of the PR and between 6b6db8c and 21f9740.

📒 Files selected for processing (2)

• CODEOWNERS
• maintainers.yaml

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📝 Walkthrough

Walkthrough

This PR updates project ownership configuration by revising the CODEOWNERS file with a new, shorter list of code owners and adding kvapsova as a new member to the project-maintainers team in maintainers.yaml.

Changes

Project Maintainers and Code Ownership

Layer / File(s)	Summary
Update maintainers and code owners CODEOWNERS, maintainers.yaml	CODEOWNERS line is replaced with a new, shorter ownership list. kvapsova is added to the project-maintainers team member list in maintainers.yaml.

🎯 1 (Trivial) | ⏱️ ~3 minutes

🐰 A rabbit's code must have keepers wise,
New guardians rise beneath the skies,
With kvapsova on the roster's page,
The project turns a brighter stage! 📝✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'chore: sync maintainers with cozystack team' clearly and directly describes the main change: synchronizing CODEOWNERS and maintainers.yaml with the cozystack team by removing stale entries and ensuring active contributors are listed.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/sync-maintainers

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[gemini-code-assist]

Code Review

This pull request updates the CODEOWNERS and maintainers.yaml files by removing a large number of maintainers and reviewers and adding @kvapsova. I have no feedback to provide.