CI: install missing python3-django-filters

Signed-off-by: Rémi Duraffort <remi.duraffort@linaro.org>
10 jobs for master in 11 minutes and 2 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
passed #50293
amd64
dispatcher/install/buster

00:04:36

passed #50291
amd64
dispatcher/install/stretch-backports

00:04:31

passed #50294
amd64
dispatcher/upgrade/buster

00:08:35

passed #50292
amd64
dispatcher/upgrade/stretch-backports

00:06:58

passed #50289
amd64
server/install/buster

00:04:45

passed #50287
amd64
server/install/stretch-backports

00:04:44

passed #50290
amd64
server/upgrade/buster

00:10:23

passed #50288
amd64
server/upgrade/stretch-backports

00:09:18

 
  Publish
skipped #50295
amd64
failure
passed #50296
amd64
success

00:00:38