Description of the problem, including code/CLI snippet

Callingcommit.diff() to get diff information for a commit only returnper_page items or 20 by default. It seemscommit.diff() does not take eitherall oras_list and only pagination works, but we don't know how many page there are except by manually checking the returned list size.

Expected Behavior

Usingcommit.diff() should be able to give us all the diffs in a commit without having to manually checking the returned page size

Actual Behavior

As described

Specifications

• python-gitlab version: 2.5.0
• API version you are using (v3/v4): v4
• Gitlab server version (or gitlab.com): gitlab.com