There's a closed pull request on the void-packages repository

pinentry-dmenu: fix for musl-based installations
https://github.com/void-linux/void-packages/pull/35137

Description:
pinentry-dmenu without any user config would print to stdout which
would render the pipe useless - musl tries to find out whether stdout
is a terminal.

The patch sent upstream.

#### Testing the changes
- I tested the changes in this PR: **YES**

#### Local build testing
- I built this PR locally for my native architecture, (aarch64-musl)