schema did not match any files under win cmd

[RobinKamps]

Describe the bug
The code generation does not work under Windows / cmd or powershell.
It worked a few Versions before - now i get always the error (on cmd or powershell):

go run github.com/Khan/genqlient
C:\dev\monorepo\golang\apps\license\license\license.graphqls did not match any files

It does not matter if the file is in the same folder or another folder - e.g.
schema: ../license/license/license.graphqls
or
schema: ./license.graphqls
or
schema: ./license.graphql

However it does work in a Lunix Subsystem under Windows.

To Reproduce
try to generate under windows

Expected behavior

Code generateion should find the schema under Win, too

genqlient version
latest