Bump actions/checkout from 3 to 4 #53

	---
	name: Continuous Integration

	on: [push, pull_request]

	jobs:

	php-cs-fixer:
	runs-on: ubuntu-latest
	env:
	PHP_CS_FIXER_IGNORE_ENV: true
	steps:
	- uses: actions/checkout@v4
	- uses: shivammathur/setup-php@v2
	with:
	php-version: '8.2'
	coverage: none
	tools: cs2pr, composer
	- run: composer --working-dir=tools/php-cs-fixer install
	- run: tools/php-cs-fixer/vendor/bin/php-cs-fixer fix --diff --dry-run --format=checkstyle \| cs2pr

	phpstan:
	runs-on: ubuntu-latest
	name: phpstan
	steps:
	- uses: actions/checkout@v4
	- uses: shivammathur/setup-php@v2
	with:
	php-version: '8.2'
	coverage: none
	tools: cs2pr, composer
	- run: composer update
	- run: composer --working-dir=tools/phpstan install
	- run: tools/phpstan/vendor/bin/phpstan --error-format=checkstyle \| cs2pr

	phpunit:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	php: [8.3, 8.2, 8.1, 8.0, 7.4]
	stability: [prefer-lowest, prefer-stable]
	name: PHPUnit on PHP ${{ matrix.php }}@${{ matrix.stability }}
	steps:
	- uses: actions/checkout@v4
	- uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	extensions: mbstring
	coverage: xdebug
	- run: \|
	echo "::add-matcher::${{ runner.tool_cache }}/php.json"
	echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
	- run: composer update --${{ matrix.stability }} --prefer-dist --no-interaction # yamllint disable-line
	- run: vendor/bin/phpunit
	- uses: codecov/codecov-action@v3

	yamllint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: ibiqlik/action-yamllint@v3
	with:
	format: github

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