package/gst1-libav: bump version to 1.20.4

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit ad104d1c63c0be58610c090b3ce7cb5907b72ba4)
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-1.20.3.tar.xz.sha256sum
-sha256  3fedd10560fcdfaa1b6462cbf79a38c4e7b57d7f390359393fc0cef6dbf27dfe  gst-libav-1.20.3.tar.xz
+# From https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-1.20.4.tar.xz.sha256sum
+sha256  04ccbdd58fb31dd94098da599209834a0e7661638c5703381dd0a862c56fc532  gst-libav-1.20.4.tar.xz
 sha256  ad2eec519ebd4b5df86ea84dff24ae3bfa2edea846a703b58902dd221ae375db  COPYING

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

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GST1_LIBAV_VERSION = 1.20.3
+GST1_LIBAV_VERSION = 1.20.4
 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+