Log Message:
Update www/php-glpi to v9.2.1

Upstream says:

You'll find below the changes of this bugfixes version:

- Rework mail attachments for notifications (inline images are now handled, ...),
- Fix ticket reopening,
- Fix operating system update on sub-entities,
- Fix issues on knowledge base items removal and display,
- Unset autoclose delay on fresh install,
- Improve private saved searches (with entities),
- Fix carriage return issues on tickets,
- Fix massive actions on operating systems,
- Fix migration issues from 9.1 and 9.2,
- Add support for other cache methods than APCu,
- Fix linear amortize calculation,
- Fix mail collector attachments owner,
- And many more!

Full ChangeLog:
<https://github.com/glpi-project/glpi/milestone/21?closed=1>