Fixes extra spacing in the new merge request dashboard

What does this MR do and why?

Fixes an extra spacing being visible at the bottom of each list when the users system has scrollbars to be visible all the time.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.