[Bug] Firecrawl.dev not reachable via IPv6

[PascalStehling]

Describe the Bug
Provide a clear and concise description of what the bug is.

Currently the api.firecrawl.dev is not reachable via IPv6 only. Not a softwarebug, but not sure where to put it.

To Reproduce
Steps to reproduce the issue:

1. Get an IPv6 only Server (eg simple Hetzner VPS with IPv6 only)
2. Run curl https://api.firecrawl.dev
3. Error: curl: (7) Failed to connect to api.firecrawl.dev port 443 after 2 ms: Couldn't connect to server

Expected Behavior
A clear and concise description of what you expected to happen.

It Should return the same as IPv4: CRAPERS-JS: Hello, world! K8s!

Environment (please complete the following information):

• OS: Ubuntu
• Firecrawl Version: the latest (I guess)