This fix is temporary but works.
Download this version (select your OS): https://chromedriver.storage.googleapis.com/index.html?path=72.0.3626.69/
Extract the zip for your OS.
Go to your Vendor/ folder in your laravel/dusk folder. Mine was
vendor/laravel/dusk/bin
Make a backup of the chromedriver for your OS. e.g. rename 'chromedriver-mac' to chromedriver-mac.backup' Rename the newly downloaded driver to the matching chromedriver. e.g. 'chromedriver' to 'chromedriver-mac'
Now run
php artisan dusk
it should now work.