Ruby example app runs with error in logs

[vdice]

A Ruby example app (updated recently in fermyon/developer#1406) utilizing the wagi executor runs as expected, however an error does show up in the logs:

$ spin up
Logging component stdio to ".spin/logs/"

Serving http://127.0.0.1:3000
Available Routes:
  ruby: http://127.0.0.1:3000
2024-10-30T22:37:06.498213Z ERROR spin_http::wagi: Invalid header name error=invalid HTTP header name header_name=ruby 3.4.0dev (2024-06-28T17

(Using spin 2.8.0-pre0 (8c036a12 2024-10-30))