update gcc-10 to gcc-13

[ActuallyTheOwner]

Debian and Gentoo are unable to build this package due to using newer GCC versions
Ubuntu is archaic and very buggy compared to other versions of linux, for the future, please look into Arch linux as an anchor to base packages

[Ortham]

I don't really understand the problem: libloot can be built using newer versions of GCC, LOOT's CI uses GCC 12 and the LOOT Flatpak build uses GCC 13.

If this is about the Linux archive that's attached to releases, that's only ever really been intended for use by LOOT's CI (it used to use the libloot release archives), as things like the GCC version and versions of dependencies like ICU make it not really portable between Linux distributions or different versions of distributions.

As for your comment about using Arch, I'm using Ubuntu because that's what GitHub's Actions runners use for their Linux builds, and I'm using a relatively old LTS because there's no need for the libloot CI build to use anything newer - when GitHub eventually remove it from service I'll update to 24.04 or whatever the latest image is at that time.

Since LOOT's CI now builds libloot from source, I'll stop publishing Linux archives with releases, to avoid future confusion.