Pending RELEASE-NOTES for the upcoming release

This is work in progress and will change before the release goes public on 2025-02-05.

Changes:

Bugfixes:

• cookie: parse only the exact expire date
• lib517: extend the getdate test with quotes and leading "junk"
• RELEASE-PROCEDURE.md: mention how to publish security advisories

Contributors:

Daniel Stenberg, Viktor Szakats