The job was canceled because "_8_3_12___prefer-stable" failed.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires laravel/framework 12.*, found laravel/framework[dev-master, 12.x-dev (alias of dev-master)] but it does not match your minimum-stability. Problem 2 - Root composer.json requires orchestra/testbench 10.*, found orchestra/testbench[10.0.x-dev, 10.x-dev] but it does not match your minimum-stability.