I updated the source code released for game version 1.13.4 (Carbonite-Classic-1.02.zip (04/11/2022) , but I can't find the related github project to make a pull request.

Oh... ok thanks, here is new branch for Classic Era => https://github.com/IrcDirk/Carbonite-Classic/tree/classic-era

Or just zip it and attach here and ill upload it where it should be ;)

Ok, I downloaded the classic-era branch, but it doesn't match the one you can download from corseforge, so I'm attaching it rather than a zip.
Carbonite.zip
Carbonite.Quests.zip

I only updated the two modules that I usually use.

Uploaded those two to Classic Era branch.