test: fix flakyness with `yes.exe`

PR-URL: https://github.com/nodejs/node/pull/12821
Fixes: https://github.com/nodejs/node/issues/12817
Refs: https://github.com/nodejs/node/pull/12658


Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>