PHP: Add support for PHP 8.3 #8

	name: Code Analysis

	on:
	pull_request:
	push:
	branches:
	- master

	jobs:
	code_analysis:
	strategy:
	fail-fast: false
	matrix:
	actions:
	- name: PHPStan
	run: composer phpstan

	- name: Unit tests
	run: composer test

	php:
	- '8.0'
	- '8.1'
	- '8.2'
	- '8.3'

	name: ${{ matrix.actions.name }} at PHP ${{ matrix.php }}
	runs-on: ubuntu-latest

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

	- name: Setup PHP
	# see https://github.com/shivammathur/setup-php
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	coverage: none

	# see https://github.com/actions/cache/blob/main/examples.md#php---composer
	- name: Get Composer Cache Directory
	id: composer-cache
	run: \|
	echo "::set-output name=dir::$(composer config cache-files-dir)"
	- uses: actions/cache@v2
	with:
	path: \|
	${{ steps.composer-cache.outputs.dir }}
	**/composer.lock
	key: ${{ runner.os }}-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}

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

	- run: ${{ matrix.actions.run }}

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