CI: Add additional log group to setup_ubuntu script

Add clear separation between the CEF setup and the apt/apt-get calls.
This makes it easier to see how much time is being spent on each task.

.github/scripts/utils.zsh/setup_ubuntu

@@ -62,6 +62,8 @@ mkdir -p ${_target} && pushd ${_target}
 XZ_OPT=-T0 tar --strip-components 1 -xJf ../${_filename} && log_status "${deps_label} extracted."
 popd
 
+log_group 'Installing obs-studio build dependencies from apt...'
+
 local suffix
 if [[ ${CPUTYPE} != ${target##*-} ]] {
   local -A arch_mappings=(