New comment by Johnnynator on void-packages repository

https://github.com/void-linux/void-packages/pull/49126#issuecomment-1986824954

Comment:
```
Package polkit-agent-1 was not found in the pkg-config search path.
Perhaps you should add the directory containing `polkit-agent-1.pc'
to the PKG_CONFIG_PATH environment variable
Package 'polkit-agent-1', required by 'flatpak', not found
```

Can you add `polkit-devel` to dependency list of `flatpak-devel`, it is listed in the pkg config file as a private dependency