Update your root composer.json file to support Asset Packagist

composer-enable-asset-packagist.sh

#!/usr/bin/env bash
# Place this script in your project root and invoke it with "bash scriptname"
# Alternatively, you can just switch into the directory that contains Lightning
# and run "composer run enable-asset-packagist".
cd ./docroot/profiles/contrib/lightning; # Your path to Lightning might differ.
composer run enable-asset-packagist;