Wasm tests broken

[gretchenfrage]

It looks like I broke wasm CI in #1912: https://github.com/quinn-rs/quinn/actions/runs/12978177289/job/36192445942

I'll try to fix it soon.

[matheus23]

Feel free to @ me on these issues when they happen (here and in discord) - I'm happy to lend a hand given I contributed Wasm support. (EDIT: I guess in this case it was really nothing major - but putting this out there anyways in general)