Fix jsonserialize deprication #281

	name: Test
	on: [push]

	jobs:
	build:
	strategy:
	matrix:
	php: ['7.4']
	fail-fast: false
	name: PHP ${{ matrix.php }}
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2
	with:
	ref: ${{ github.event.pull_request.head.sha }}

	- name: Install PHP
	uses: shivammathur/setup-php@2.7.0
	with:
	php-version: ${{ matrix.php }}

	- name: Debugging
	run: \|
	php --version
	php -m
	composer --version

	- name: Install dependencies
	run: \|
	composer install --prefer-dist --no-suggest

	- name: Run tests
	run: composer run test

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