package/rauc-hawkbit-updater: bump to version 1.4
For change log, see:
https://github.com/rauc/rauc-hawkbit-updater/releases/tag/v1.4
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
[Julien: add link to change log]
Signed-off-by: Julien Olivain <ju.o@free.fr>