Add tests to run colcon-bundle against APT installed colcon about colcon-bundle HOT 3 OPEN

A release is simultaneously being pushed to pip and apt (which apt even being delayed a bit until new packages are imported from the bootstrap repo into building/testing/main and then later synced to the official mirror). So switching from pip to apt will pick up new changes not earlier but even later.

from colcon-bundle.

I'm suggesting testing against both not switching. The purpose of this feature request is to help detect if the reason why colcon-bundle is failing is due to changes in colcon by providing a comparison against a more stable release.

from colcon-bundle.

against a more stable release

I am not understanding where the "more stable release" is coming from? The apt repo only contains the latest release. From pip you could install older versions (but it would be hard to know what older version to try).

from colcon-bundle.