Set user agent columns to `null` when user agent is not available #194

	name: run-tests

	on:
	pull_request:

	jobs:
	run-tests:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	php: [8.0, 8.1, 8.2, 8.3]
	laravel: [8., 9., 10., 11.]
	include:
	- laravel: 11.*
	testbench: 9.*
	- laravel: 10.*
	testbench: 8.*
	- laravel: 9.*
	testbench: 7.*
	- laravel: 8.*
	testbench: 6.*
	exclude:
	- laravel: 10.*
	php: 8.0
	- laravel: 11.*
	php: 8.0
	- laravel: 11.*
	php: 8.1

	name: PHP${{ matrix.php }} - Laravel ${{ matrix.laravel }}

	steps:
	- name: Update apt
	run: sudo apt-get update --fix-missing

	- name: Checkout code
	uses: actions/checkout@v2

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	coverage: none

	- name: Setup Problem Matches
	run: \|
	echo "::add-matcher::${{ runner.tool_cache }}/php.json"
	echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"

	- name: Install dependencies
	run: \|
	composer require "laravel/framework:${{ matrix.laravel }}" "orchestra/testbench:${{ matrix.testbench }}" --no-interaction --no-update
	composer update --prefer-dist --no-interaction --no-suggest
	- name: Execute tests
	run: vendor/bin/phpunit

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