package/gst-omx: bump version to 1.22.12

No functional change, but bump for consistency.  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 038c7df88e063fa10b0e1aa5e26159618fea21de)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gst-omx/gst-omx.hash

@@ -1,3 +1,3 @@
-# From https://gstreamer.freedesktop.org/src/gst-omx/gst-omx-1.22.9.tar.xz.sha256sum
-sha256  9362d6117985d09dcf6e27bdaef377dc08efb7df01d00101d04fb644addac61e  gst-omx-1.22.9.tar.xz
+# From https://gstreamer.freedesktop.org/src/gst-omx/gst-omx-1.22.12.tar.xz.sha256sum
+sha256  6b0685b92ac735032d7987d1028afaeab0a98ab726e0c51e5b9bfc8f2da7c8b1  gst-omx-1.22.12.tar.xz
 sha256  dc626520dcd53a22f727af3ee42c770e56c97a64fe3adb063799d8ab032fe551  COPYING

package/gstreamer1/gst-omx/gst-omx.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-GST_OMX_VERSION = 1.22.9
+GST_OMX_VERSION = 1.22.12
 GST_OMX_SOURCE = gst-omx-$(GST_OMX_VERSION).tar.xz
 GST_OMX_SITE = https://gstreamer.freedesktop.org/src/gst-omx