Support PHP8.1

[sjavadez]

Having error with PHP 8.1:

Changed current directory to /home/javad/.config/composer
Using version ^4.7 for bitfumes/laravel-packer
./composer.json has been updated
Running composer update bitfumes/laravel-packer
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - laravel-zero/framework[v6.0.0, ..., v6.4.0] require php ^7.2 -> your php version (8.1.8) does not satisfy that requirement.
    - laravel-zero/framework[v7.0.0, ..., v7.2.1] require php ^7.2.5 -> your php version (8.1.8) does not satisfy that requirement.
    - laravel-zero/framework[v8.0.0, ..., v8.3.0] require php ^7.3 -> your php version (8.1.8) does not satisfy that requirement.
    - laravel-zero/framework[v8.4.0, ..., v8.9.1] require symfony/console ^5.1 -> found symfony/console[v5.1.0, ..., v5.4.11] but the package is fixed to v6.1.2 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
    - laravel-zero/framework v8.10.0 requires symfony/console ^5.3 -> found symfony/console[v5.3.0, ..., v5.4.11] but the package is fixed to v6.1.2 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
    - bitfumes/laravel-packer[v4.7.0, ..., v4.7.5] require laravel-zero/framework ^6.0|^7.0|^8.0 -> satisfiable by laravel-zero/framework[v6.0.0, ..., v6.4.0, v7.0.0, v7.1.0, v7.2.0, v7.2.1, v8.0.0, ..., v8.10.0].
    - Root composer.json requires bitfumes/laravel-packer ^4.7 -> satisfiable by bitfumes/laravel-packer[v4.7.0, ..., v4.7.5].

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.
You can also try re-running composer require with an explicit version constraint, e.g. "composer require bitfumes/laravel-packer:*" to figure out if any version is installable, or "composer require bitfumes/laravel-packer:^2.1" if you know which you need.