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

[WIP] xfce4-panel: update to 4.15.0.
https://github.com/void-linux/void-packages/pull/15774

Description:
This breaks the following packages due to:

```
unresolvable shlib `libxfce4panel-1.0.so.4'
```

- [ ] orage
- [ ] xfce4-notes-plugin
- [ ] xfce4-windowck-plugin