Fix null value errors in attribute casting #833

	name: Lunar Table Rate Shipping Tests
	on:
	pull_request:
	defaults:
	run:
	working-directory: ./
	jobs:
	run:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	php: [8.2, 8.3]
	laravel: [10., 11.]
	phpunit-versions: ['latest']
	name: PHP:${{ matrix.php }} / Laravel:${{ matrix.laravel }}
	steps:
	- uses: actions/checkout@v4
	- name: Setup PHP, with composer and extensions
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	extensions: mbstring, intl, amqp, dba
	tools: composer:v2, phpunit:${{ matrix.php }}

	- name: Get composer cache directory
	id: composer-cache
	run: echo "::set-output name=dir::$(composer config cache-files-dir)"

	- name: Cache composer dependencies
	uses: actions/cache@v4
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: dependencies-laravel-${{ matrix.laravel }}-php-${{ matrix.php }}-composer-${{ hashFiles('composer.json') }}
	restore-keys: dependencies-laravel-${{ matrix.laravel }}-php-${{ matrix.php }}-composer-

	- name: Install Composer dependencies
	run: \|
	composer require "laravel/framework:${{ matrix.laravel }}" --no-interaction --no-update --dev
	composer update --prefer-stable --no-interaction --no-suggest

	- name: Execute tests (Unit and Feature tests) via PHPUnit
	env:
	APP_ENV: testing
	DB_CONNECTION: testing
	DB_DATABASE: ":memory:"
	run: vendor/bin/pest --testsuite shipping

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