Kanboard v1.2.23 release notes

Open SVG, Ogg, and some video file attachments in browser
Added more video, music, code and spreadsheet extensions to show better file attachment icons
Updated jQuery to latest stable version
Updated Docker image to PHP 8.1 and Alpine Linux 3.16
Renamed default branch from master to main
Bumped phpunit/phpunit from 9.5.14 to 9.5.23
Bumped symfony/finder from 5.4.3 to 5.4.11
Fixed subtask translation when using different languages
Added Project Overview document template hook
Updated translations
Fixed wrong foreign key constraint on table subtask_time_tracking table. The constraints references a no-longer-existing table task_has_subtasks
Fixed regression regarding subtask reordering
Changed minimum requirement to PHP 7.4
- PHP versions lower than 7.4 are end-of-life: https://www.php.net/supported-versions.php
- Libraries used by Kanboard have dropped support for older versions of PHP