chore: update workflows to latest versions

[firstof9]

This PR updates the GitHub Action workflows to their latest major versions to ensure stability and access to the latest features.

Changes:

• actions/checkout updated to v6
• actions/setup-python updated to v6
• actions/upload-artifact updated to v7
• actions/download-artifact updated to v8
• codecov/codecov-action updated to v6
• release-drafter/release-drafter updated to v7
• pypa/gh-action-pypi-publish updated to v1

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 15403577-60e5-4438-a0fb-7ebefe81dfdb

📥 Commits

Reviewing files that changed from the base of the PR and between 92021e1 and 6de5791.

📒 Files selected for processing (3)

• .github/workflows/publish-to-pypi.yml
• .github/workflows/release-drafter.yml
• .github/workflows/test.yml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch update-workflows-2026

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[firstof9]

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