tests failing in node 21

[KhafraDev]

https://github.com/nodejs/undici/actions/runs/8179418041/job/22365444520
https://github.com/nodejs/undici/actions/runs/8179418041/job/22365444256

[Uzlopak]

after is for some reason broken in node v. 21.7.0

We could rewrite it to not use after.... but i doubt that this is the way to got

[metcoder95]

Waiting for: nodejs/node#51998

[Uzlopak]

v21.7.1 got released.