gst-libav: update to 1.28.6.

srcpkgs/gst-libav/template

@@ -1,6 +1,6 @@
 # Template file for 'gst-libav'
 pkgname=gst-libav
-version=1.28.5
+version=1.28.6
 revision=1
 build_style=meson
 hostmakedepends="pkg-config yasm"
@@ -12,7 +12,7 @@ license="LGPL-2.0-or-later"
 homepage="https://gstreamer.freedesktop.org"
 changelog="https://gstreamer.freedesktop.org/releases/${version%.*}/#${version}"
 distfiles="https://gstreamer.freedesktop.org/src/gst-libav/gst-libav-${version}.tar.xz"
-checksum=452854656056f0b16511a1d9ad4f2679ff5e5a87c89f90cf7ee5dec005ddb1e4
+checksum=71e6eafb4fff2a66d1bb0ba8d078224dfe7e3397307d8c0bba3dc23606e08f51
 
 case "$XBPS_TARGET_MACHINE" in
 	*-musl) # Required by musl for M_SQRT1_2