Full Changelog links lead to 404

Summary

The "Full Changelog" links for releases since 1.6.1 on the releases page are broken.

Steps to reproduce

Steps to reproduce the behavior:

1. Open the releases page.
2. Under the release notes for 1.6.2 or 1.6.1, click on the "Full Changelog" link. The link for 1.6.2 is currently: https://gitlab.com/openconnect/openconnect-gui/-/compare/v1.6.1..v1.6.2.

Actual results

The linked page returns a 404 error (Not Found).

Expected results

A detailed changelog.