laravel not upgrading to laravel 8? code example

Example 1: laravel 7 upgrade

$>which composer
/usr/local/bin/composer

$>php -d memory_limit=512M /usr/local/bin/composer update
...

Example 2: laravel 7 to 8 update code ?

Route::get('/profile/{location}', function ($location = null) {
    //
})->name('profile');

// Laravel 5.8: http://example.com/profile/active
echo route('profile', ['status' => 'active' => 'inActive']);

// Laravel 6.0: http://example.com/profile?status=active
echo route('profile', ['status' => 'active']);