Backport v2024 <- v2025dev3: Handle multiple bridge pipelines on pkg

Backport !679 (merged)

After enabling additional checks for pkg/linux there are more bridge pipelines, causing the script not being able to find the correct pipeline to retrieve OBS builds.

To fix the issue handle multiple bridge pipelines by finding the one named 'obs'.

Signed-off-by: Walter Lozano walter.lozano@collabora.com