Depthai-ros main branch doesn't exist anymore

[Guillaumebeuzeboc]

The dependencies.repo is listing the repository from depthai-ros on the branch main. But the main branch doesn't exist any more on the depthai-ros repo. Instead, there is main-old and ros-release branch. I assume that the dependencies.repo should point to one of these branches.

[roni-kreinin]

I think I will just remove dependencies.repo as all of those packages have now been released. Good catch though.