Fix buick-build-and-test (#82935)
By updating apt-repo before trying to install buck package
Tested in https://github.com/malfet/deleteme/runs/7705552380?check_suite_focus=true
Fixes https://github.com/pytorch/pytorch/issues/82934
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82935
Approved by: https://github.com/janeyx99, https://github.com/houseroad
