package/gst1-libav: bump version to 1.22.12

For various bugfixes. For details, see the release notes:

https://gstreamer.freedesktop.org/releases/1.22/

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 3e5223d4e871c10dd4a9ae6e6b275a2ae74b9646)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

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

@@ -1,3 +1,3 @@
-# From https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-1.22.9.tar.xz.sha256sum
-sha256  192f7d27d21c1e7c72c339a2647a9b0c247fedc62ea5029115f8c3e22ebb87d8  gst-libav-1.22.9.tar.xz
+# From https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-1.22.12.tar.xz.sha256sum
+sha256  3b60d4cac2fbcd085a93e9389ca23e0443bee1ca75574d31d4f12bb1bbecab48  gst-libav-1.22.12.tar.xz
 sha256  ad2eec519ebd4b5df86ea84dff24ae3bfa2edea846a703b58902dd221ae375db  COPYING

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

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GST1_LIBAV_VERSION = 1.22.9
+GST1_LIBAV_VERSION = 1.22.12
 GST1_LIBAV_SOURCE = gst-libav-$(GST1_LIBAV_VERSION).tar.xz
 GST1_LIBAV_SITE = https://gstreamer.freedesktop.org/src/gst-libav
 GST1_LIBAV_LICENSE = LGPL-2.1+