gitlab-ci: fix depe

Change-Id: Ie88ebf492e0e588aa11fa18fb9ffe95a6dda26db
1 job for master in 3 minutes and 16 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
failed #2971
build

00:03:16

 
Name Stage Failure
failed
build Test
Errors were encountered while processing:
libosmocore-doc
libosmocore-utils:amd64
libosmocore
libosmocore-dbg:amd64
libosmocore-dev:amd64
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1