graphics/pecl-imagick: Update 3.8.0 => 3.8.1
Release Notes:
https://pecl.php.net/package/imagick/3.8.1
- Fix build with PHP 8.6.
PR: 296569
Approved by: Miroslav Lachman <000.fbsd@quip.cz> (maintainer)
Sponsored by: UNIS Labs
MFH: 2026Q3
(cherry picked from commit 2761152d28f6d746452b0ab2b71b558f4f720939)