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 makes a small CI maintenance update by upgrading the setup-uv GitHub Action from v7 to v8 in the repository’s CI workflow.

📊 Key Changes

• Updated .github/workflows/ci.yml
• Changed the CI dependency setup step from astral-sh/setup-uv@v7 to astral-sh/setup-uv@v8
• No application code, features, or user-facing behavior was modified

🎯 Purpose & Impact

• 🚀 Keeps the CI pipeline aligned with the latest supported version of the setup-uv action
• 🛠️ May improve workflow reliability, compatibility, and access to upstream fixes or improvements
• ✅ Helps reduce maintenance risk by avoiding older action versions
• 👥 No direct impact on end users, but contributors may benefit from a more up-to-date and stable development workflow