www/glpi: Update 10.0.17 => 10.0.18 (fixed 9 CVEs)

This is a security release (3 high severity, 6 moderate security fixes).

Changelog:
https://github.com/glpi-project/glpi/releases/tag/10.0.18

Update maintainer email.
Replace PORTVERSION with DISTVERSION.
Use gettext-tools instead gettext in USES.

PR: 287094
MFH: 2025Q2