Upgrade everything to its newest version, use PSR-12, support PHP 8.3 #664

	name: Tests and linting

	on:
	push:
	pull_request:
	schedule:
	- cron: '0 3 * * *'

	jobs:
	tests:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	php-version: ['8.0', '8.1', '8.2', '8.3']
	dependencies: ['']
	include:
	- { php-version: '8.0', dependencies: '--prefer-lowest --prefer-stable' }

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

	steps:
	- uses: actions/checkout@v2

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-version }}
	extensions: mbstring, intl, zip
	coverage: xdebug
	tools: composer:v2

	- name: Install dependencies
	run: composer update --no-progress ${{ matrix.dependencies }}

	- name: Run tests
	run: vendor/bin/phpunit --coverage-clover coverage-clover.xml

	- name: Submit coverage to Coveralls
	env:
	COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: \|
	composer global require --no-progress --dev php-coveralls/php-coveralls guzzlehttp/guzzle:^6.5
	~/.composer/vendor/bin/php-coveralls -v

	codestyle:
	name: "Code style and static analysis"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: '8.3'
	extensions: mbstring, intl
	tools: composer:v2

	- name: Install dependencies
	run: composer update --no-progress

	- name: Lint
	run: composer lint

	- name: Run checks
	run: composer analyze

	markdown-link-check:
	name: "Markdown link check"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: gaurav-nelson/github-action-markdown-link-check@v1
	with:
	use-verbose-mode: 'yes'

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