gst1-plugins-bad: security bump to version 1.10.4

Fixes:
CVE-2017-5848 - The gst_ps_demux_parse_psm function in
gst/mpegdemux/gstmpegdemux.c in gst-plugins-bad in GStreamer allows
remote attackers to cause a denial of service (invalid memory read and
crash) via vectors involving PSM parsing.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>