Unable to update the Minecraft Native Launcher

Whenever I run `flatpak run com.mojang.Minecraft` I get the following:

```
https://launchermeta.mojang.com/v1/products/launcher/6f083b80d5e6fabbc4236f81d0d8f8a350c665a9/linux.json
MessageBox(Minecraft Launcher): Unable to update the Minecraft Native Launcher.
```

I looked for a log or anything to tell me more, and in `~/.var/app/com.mojang.Minecraft/.minecraft/bootstrap_log.txt` I found the following, which I believe to be the reason why it won't start:
```
[Error: 2023-12-03 14:22:30.591966358: PistonUpdate.cpp(701)] /.../PistonStaging could not be created as a directory. Error: Read-only file system
[Error: 2023-12-03 14:22:30.592018997: mainLinux.cpp(208)] Updating bootstrap and launcher failed!
```

Here is the full [bootstrap_log.txt](https://github.com/flathub/com.mojang.Minecraft/files/13539252/bootstrap_log.txt)

I am running an up-to-date install of Void Linux with the musl libc. musl might be to blame (it often is for many things unfortunately), however I would expect flatpak to work around that..