There is an updated pull request by acobaugh against master on the void-packages repository

https://github.com/acobaugh/void-packages master
https://github.com/void-linux/void-packages/pull/27663

slack-desktop: add -p to mkdir to avoid error
I encountered this error when attempting to build slack-desktop locally. Unsure if there's a better fix, but it seems harmless.

```
=> slack-desktop-4.12.0_1: running do_install ...
mkdir: cannot create directory ‘/destdir//slack-desktop-4.12.0/usr/lib’: File exists
=> ERROR: slack-desktop-4.12.0_1: do_install: 'mkdir ${DESTDIR}/usr/{bin,lib}' exited with 1
=> ERROR:   in do_install() at srcpkgs/slack-desktop/template:27
```

A patch file from https://github.com/void-linux/void-packages/pull/27663.patch is attached