Unit Tests Schema update

[bschmitt]

Bug:

Run ./vendor/bin/phpunit
PHPUnit [1](https://github.com/bschmitt/laravel-amqp/actions/runs/4226800858/jobs/7340631513#step:7:1)0.1-dev by Sebastian Bergmann and contributors.

Runtime:       PHP [8](https://github.com/bschmitt/laravel-amqp/actions/runs/4226800858/jobs/7340631513#step:7:9).1.16
Configuration: /home/runner/work/laravel-amqp/laravel-amqp/phpunit.xml

...........                                                       11 / 11 (100%)

Time: 00:00.05[9](https://github.com/bschmitt/laravel-amqp/actions/runs/4226800858/jobs/7340631513#step:7:10), Memory: [10](https://github.com/bschmitt/laravel-amqp/actions/runs/4226800858/jobs/7340631513#step:7:11).00 MB

There was 1 PHPUnit warning:

1) Your XML configuration validates against a deprecated schema. Migrate your XML configuration using "--migrate-configuration"!

WARNINGS!
Tests: [11](https://github.com/bschmitt/laravel-amqp/actions/runs/4226800858/jobs/7340631513#step:7:12), Assertions: [15](https://github.com/bschmitt/laravel-amqp/actions/runs/4226800858/jobs/7340631513#step:7:16), Warnings: 1.
Error: Process completed with exit code 1.```