debian: add ffmpeg to the build-depends, for the tests.

Signed-off-by: Mattia Rizzolo <mattia@debian.org>
4 jobs for master in 16 minutes and 26 seconds
Status Job ID Name Coverage
  Test
failed #179605
allowed to fail
stable-bpo

00:02:06

passed #179604
testing

00:16:26

88.0%
failed #179606
allowed to fail
ubuntu-devel

00:09:15

passed #179603
unstable

00:16:10

88.0%
 
Name Stage Failure
failed
ubuntu-devel Test
done.
done.
Processing triggers for libgdk-pixbuf2.0-0:amd64 (2.38.1+dfsg-1) ...
Errors were encountered while processing:
linux-firmware
linux-image-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)
E: Failed to process build dependencies
ERROR: Job failed: exit code 1
failed
stable-bpo Test
               Depends: unzip but it is not going to be installed
Depends: xmlbeans but it is not going to be installed
Depends: xxd but it is not going to be installed or
vim-common but it is not going to be installed
builddeps:essentials : Depends: build-essential but it is not going to be installed

W: Encountered an unexpected section with 1 fields: Message: (UNSAT) No Solutions according to the given preferences
E: Broken packages
ERROR: Job failed: exit code 1