[3dprinter-general] Bug#1012575: libarcus: FTBFS with protobuf 3.20.1+

[Christoph Berg]

Re: Gregor Riepl
> I took the liberty to branch from the last 4.13 release, so we can push
> a fixed version before 5.0 arrives:
> https://salsa.debian.org/3dprinting-team/libarcus/-/tree/testing
> 
> And I added it to the master branch for the 5.0 release as well.
> 
> @myon Please upload 4.13.0-3 when you have time. Thank you!

Done. Thanks for preparing it!

Christoph