* gnu/packages/video.scm: Update to 0.3.0.
[source]<origin>: Switch to url-fetch as upstream releases
have hashes that we can verify.
[inputs]: change qtbase to use QT6.
Change-Id: I977a006a6cd8d171adcb8651e2ffc35bea287b1b
Signed-off-by: Steve George <steve@futurile.net>