www/gitea: Update to 1.9.5

Changes: https://blog.gitea.io/2019/10/gitea-1.9.5-is-released/

PR: 241599
Submitted by: stb@lassitu.de (maintainer)
Approved by: tz (mentor, implicit)
MFH: 2019Q4
Security: fd10aa77-fb5e-11e9-af7b-0800274e5f20