devel/ghub: Update to 3.5.0

• Limit auth-source kludge to affected Emacs releases
• Fix url-http-handle-authentication
• Add a .mailmap address
• Some corrections of typos

Changelog: https://github.com/magit/ghub/commits/v3.5.0

PR: 251308
Submitted by: Yasuhiro KIMURA <yasu@utahime.org> (maintainer)
Approved by: arrowd, tcberner (mentors, implicit)