gst1-libav: bump to 1.12.3

Signed-off-by: Adam Duskett <Adamduskett@outlook.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gstreamer1/gst1-libav/gst1-libav.hash

@@ -1,2 +1,2 @@
-From https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-1.12.2.tar.xz.sha256sum
-sha256 5bb735b9bb218b652ae4071ea6f6be8eaae55e9d3233aec2f36b882a27542db3 gst-libav-1.12.2.tar.xz
+From https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-1.12.3.tar.xz.sha256sum
+sha256 015ef8cab6f7fb87c8fb42642486423eff3b6e6a6bccdcd6a189f436a3619650 gst-libav-1.12.3.tar.xz

package/gstreamer1/gst1-libav/gst1-libav.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GST1_LIBAV_VERSION = 1.12.2
+GST1_LIBAV_VERSION = 1.12.3
 GST1_LIBAV_SOURCE = gst-libav-$(GST1_LIBAV_VERSION).tar.xz
 GST1_LIBAV_SITE = https://gstreamer.freedesktop.org/src/gst-libav
 GST1_LIBAV_CONF_OPTS = --with-system-libav