Check Links fails right after a new release

[jtpio]

Problem

When a new release has been published with the commit and tag created on the main branch:

The check release script triggered on a new PR can fail with the following:

Example PR: jtpio/ipylab#76
Example run: https://github.com/jtpio/ipylab/runs/3526255104

Proposed Solution

This seems to be because there is no new change since the last tag when generating the changelog (None).

Maybe the fix could be to default the Full Changelog url to use the latest tag instead of None.

Additional context

[blink1073]

Fixed by #243