Recently Ubuntu updated its repositories configuration file from `/etc/apt/sources.list` to `/etc/apt/sources.list.d/ubuntu.source`. Thus, we need to update its location to be able to install all the package dependencies. In addition, the CI script was trying to uncomment the lines starting with `deb-src`, but there is none in the new configuration file format. Replace `Types: deb` by `Types: deb deb-src` at the beginning of the line instead. This commit merges all dependency installation scripts into a single workflow, which will be called from all sites that have to install dependencies. Link: https://linuxconfig.org/ubuntus-repository-configuration-ubuntu-sources-have-moved-to-etc-apt-sources-list-d-ubuntu-sources Closes: https://github.com/shadow-maint/shadow/issues/1088 Reported-by: Alejandro Colomar <alx@kernel.org> Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>