games/xtxf: update 0.11.4 -> 0.11.5

Changelog: https://github.com/charlesrocket/xtxf/releases/tag/0.11.5

Major changes:

• Bump zig to 0.15.1

PR: 289011
Reported by: Pero Oršolić <bsd@orsolic.org>
Approved by: slowdive <slowdive@me.com> (maintainer)