please rename the default branch for Tycho from "master" > "main"

Currently Tycho is using the "master" name as the default branch but we want to adopt common practice these days to name it "main" instead:

https://github.com/eclipse-tycho/tycho

but it seems that is something needs to be done with more privileges, therefore I'd like to ask to rename the branch here:

https://github.com/github/renaming#renaming-existing-branches