package/gst1-vaapi: 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>
[Julien: fixed commit log title]
Signed-off-by: Julien Olivain <ju.o@free.fr>