dpkg_lowpkg: Sort list of files
dpkg_lowpkg: Sort list of files

The output of each `dpkg -L` call is sorted. Therefore also sort the
list of files.

Signed-off-by: Benjamin Drung <86a6db991ec5c1a96f98c92b98df9d547d7c8c84@cloud.ionos.com>

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt