Lightning project packages dependencies break when using PHP ^8.0

[mhmelshaaerdxpr]

When requiring the dxpr/dxpr_builder_e package using PHP ^8.0 it throws dependencies errors. This is easily reproducible using the docker-compose stack.

Steps to reproduce:

• Clone the lightning_dxpr_project.
• Run composer install.
• Copy the .env.example file and rename it .env and set the DXPR_ACCESS_TOKEN.
• Make sure the enabled PHP_TAG variable is the one with PHP 8.0.
• Run docker-compose up -d && docker-compose logs -f and wait till the PHP docker service starts running the installation script.
• You will see that the composer command fails when trying to install the dxpr/dxpr_builder_e