Summary: Vast.ai adds Serverless product section

Why It Matters: This change shows a new way for users to deploy models. It focuses on ease of use and paying only for what is used.

What Changed:

• A new section for "Serverless" was added.
• The "Serverless" section includes a description: "Deploy models anywhere, scale automatically, and pay only for what you use."
• A new call to action link was added for "Serverless": "Start building with Serverless today".
• The "Enterprise" section moved down below the new "Serverless" section.