Granian always returns 1 as exit code on windows

[Pichas]

I run example and got 1 as exit code. I pressed ctrl+c to stop the server

OS: windows 11
granian version: 2.4.2
python: 3.12

How to reproduce:

• copy example from readme.md to main.py file
• install granian
• run granian
• press ctrl+c
• check return code