CI: install missing python3-django-filters

Signed-off-by: Rémi Duraffort <remi.duraffort@linaro.org>
10 jobs for master in 12 minutes and 7 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Test
passed #64259
amd64
dispatcher/install/buster

00:05:20

passed #64257
amd64
dispatcher/install/stretch-backports

00:05:25

passed #64260
amd64
dispatcher/upgrade/buster

00:09:25

passed #64258
amd64
dispatcher/upgrade/stretch-backports

00:07:53

passed #64255
amd64
server/install/buster

00:05:40

passed #64253
amd64
server/install/stretch-backports

00:05:23

passed #64256
amd64
server/upgrade/buster

00:11:25

passed #64254
amd64
server/upgrade/stretch-backports

00:10:11

 
  Publish
skipped #64261
amd64
failure
passed #64262
amd64
success

00:00:41