Bump astral-sh/setup-uv to v8 in /.github/workflows

[UltralyticsAssistant]

Bump astral-sh/setup-uv to v8 in /.github/workflows

Automated by Ultralytics Actions.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

🔧 This PR updates the GitHub Actions workflow to use astral-sh/setup-uv@v8 instead of @v7 in the publishing pipeline.

📊 Key Changes

• Upgraded the setup-uv GitHub Action from v7 to v8 in .github/workflows/publish.yml.
• Applied this update in all relevant publish workflow jobs:
  • package/version checking
  • build step
  • SBOM-related environment setup
• No application code or documentation logic was changed—this is a CI/CD maintenance update only. 🛠️

🎯 Purpose & Impact

• Keeps the repository’s release workflow aligned with the latest uv GitHub Action version. ✅
• Helps improve long-term workflow reliability, compatibility, and support as older action versions age out.
• Reduces maintenance risk by ensuring the publishing pipeline uses a more current dependency setup.
• Minimal user-facing impact: this mainly benefits maintainers by making package publishing and build automation more up to date and stable. 🚀