Fix git pull before git commit

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Small fix in the GitHub Actions configuration to ensure the latest changes are pulled correctly.

📊 Key Changes

• Added git pull origin ${{ github.head_ref || github.ref }} command before staging files for commit.
• Removed git pull --rebase command to avoid potential merge conflicts.

🎯 Purpose & Impact

• Ensuring Current Updates: The new pull command before staging ensures the local branch is up-to-date, reducing errors.
• Simplified Workflow: Removing the rebase avoids complex merge issues, leading to a smoother automation process.

These changes streamline the continuous integration process, making it more reliable and simpler for developers. 🚀🔧