4.6.0

• Drop PHP 7.2 and add PHP 8.0 support.
• Upgrade all Laravel packages to ^8.x from ^5.8.
• Upgrade vlucas/phpdotenvto ^5.3 from ^3.4.
• Upgrade symfony/console to ^5.1 from ^4.3.
• Upgrade phpunit/phpunit to ^9.5
• [Cache] Fix tagged file issue on Windows