Update README.md Environments icons

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Streamlined and refreshed the Quickstart environment links and logos on the README.

📊 Key Changes

• Resized logos for Colab, Kaggle, Docker, AWS, and GCP from 15% to 10% width.
• Added Ultralytics transparent logos between environment logos, each with a width of 5%.

🎯 Purpose & Impact

• Purpose: The change is likely aimed at improving the visual layout and user experience when viewing the Quickstart guide, ensuring consistent and aesthetically pleasing spacing between logos.
• Impact: Users will see a more polished and professional presentation when exploring the Quickstart options, potentially making the GitHub repository more inviting for newcomers. However, the actual functionality of the Quickstart environments remains unchanged. 🎨✨