pipeline-definitions: Expose debs more prominently

This adds a link right at the MR
13 jobs for debs in 4 seconds (queued for 3 seconds)
Name Stage Failure
test:native Test
Using docker image sha256:9e1a64aca99cbc89e5cb9a9022d74cf756138a5e465045df1c5fcadf0c56dab3 for debian:buster ...
Preparing environment
Running on runner-cee040da-project-1149-concurrent-0 via blade001...
Getting source from Git repository
Fetching changes with git depth set to 50...
Initialized empty Git repository in /builds/guido.gunther/librem5-ci/.git/
Created fresh repository.
fatal: couldn't find remote ref refs/heads/debs
ERROR: Job failed: exit code 1