Update CONTRIBUTING.md #410

	name: codequality

	on:
	push:
	branches:
	- master
	- develop
	pull_request:
	branches:
	- master
	- develop
	jobs:
	shellcheck:
	name: Shellcheck
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Run ShellCheck
	uses: ludeeus/action-shellcheck@master
	test:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	php: ["7.4", "8.0", "8.1"]

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

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

	- name: Cache PHP dependencies
	uses: actions/cache@v1
	with:
	path: vendor
	key: ${{ runner.OS }}-build-${{ hashFiles('**/composer.lock') }}

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

	- name: Validate Composer setup
	run: composer validate --strict

	- name: Install PHP dependencies
	run: composer install --no-interaction

	- name: Run parallel lint
	run: composer run-script lint

	- name: Test PHP Coding Standards
	run: composer run-script phpcs

	- name: Test code against PHP 7.4 standard
	run: composer run-script php74

	- name: Test code against PHP 8.0 standard
	run: composer run-script php80

	- name: Test code against PHP 8.1 standard
	run: composer run-script php81

	- name: Run PHPStan static analyser
	run: composer run-script phpstan

	- name: Run unit tests, ignoring external requests
	run: composer run-script phpunit -- --exclude-group ExternalRequests

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