www/gitea: Update to 1.16.9 (fixes security vulnerabilities)

This release fixes two security issues and 18 bugs

ChangeLog: https://github.com/go-gitea/gitea/releases/tag/v1.16.9
PR: 265526
(cherry picked from commit 2bd42152ca3ba3956f2528cce1e8bf405a5c88e4)