www/gitea: update to 1.21.5 (fixes security vulnerabilities)

ChangeLog: https://github.com/go-gitea/gitea/releases/tag/v1.21.5

SECURITY

• Prevent anonymous container access if RequireSignInView is enabled
• Update go dependencies and fix go-git

BUGFIXES

• Revert "Speed up loading the dashboard on mysql/mariadb
• Fix an actions schedule bug
• Fix update enable_prune even if mirror_interval is not provided
• Fix uploaded artifacts should be overwritten
• Preserve BOM in web editor
• Strip / from relative links
• Don't remove all mirror repository's releases when mirroring
• Implement MigrateRepository for the actions notifier
• Respect branch info for relative links
• Don't reload timeline page when (un)resolving or replying conversation
• Only migrate the first 255 chars of a Github issue title
• Fix sort bug on repository issues list
• Fix DeleteCollaboration transaction behaviour
• Fix schedule not trigger bug because matching full ref name with short ref name
• Fix migrate storage bug
• Fix archive creating LFS hooks and breaking pull requests
• Fix reverting a merge commit failing
• Upgrade xorm to v1.3.7 to fix a resource leak problem caused by Iterate
• Fix incorrect PostgreSQL connection string for Unix sockets

ENHANCEMENTS

• Make loading animation less aggressive
• Avoid duplicate JS error messages on UI
• Bump @github/relative-time-element to 4.3.1

MISC

• Warn that DISABLE_QUERY_AUTH_TOKEN is false only if it's explicitly defined
• Remove duplicated checkinit on git module

PR: 277066
Reported by: freebsd@otoh.org
MFH: 2024Q1 (security fixes, bug fixes)