fix: add return type after php 8.1 version or newest #13

	name: run-tests

	on: [push, pull_request]

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: true
	matrix:
	os: [ubuntu-latest]
	php: [7.2, 7.3, 7.4, 8.0, 8.1, 8.2]

	name: PHP${{ matrix.php }}

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

	- name: Setup PHP
	id: setup-php
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	extensions: dom, curl, libxml, mbstring, zip, pcntl, bcmath, soap, intl, gd, exif, iconv
	coverage: none

	- name: Get Composer Cache Directory
	id: get-composer-cache
	run: \|
	echo "::set-output name=dir::$(composer config cache-files-dir)"

	- name: Setup Cache
	id: setup-cache
	uses: actions/cache@v2
	with:
	path: ${{ steps.get-composer-cache.outputs.dir }}
	key: composer-${{ matrix.php }}-${{ hashFiles('composer.json') }}

	- name: Install dependencies
	id: install-deps
	run: composer install --no-interaction --prefer-dist --no-suggest

	- name: Run tests
	id: run-tests
	run: vendor/bin/phpunit

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