docs: add Note for PHPUnit 11 Support in README.md #39

	name: Tests

	on:
	push:
	pull_request:

	jobs:
	tests:
	name: PHPUnit PHP ${{ matrix.php }} ${{ matrix.dependency }} (Symfony ${{ matrix.symfony }})
	runs-on: ubuntu-latest
	strategy:
	matrix:
	php:
	- '8.1'
	- '8.2'
	- '8.3'
	dependency:
	- ''
	symfony:
	- '5.4.*'
	- '6.4.*'
	- '7.0.*'
	include:
	- php: '8.1'
	symfony: '5.4.*'
	dependency: 'lowest'
	exclude:
	- php: '8.1'
	symfony: '7.0.*'
	fail-fast: false
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php }}
	extensions: pcov
	tools: flex

	- name: Get Composer Cache Directory
	id: composer-cache
	run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT

	- name: Cache dependencies
	uses: actions/cache@v4
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}
	restore-keys: ${{ matrix.php }}-composer-

	- name: Update project dependencies
	if: matrix.dependency == ''
	run: composer update --no-progress --ansi --prefer-stable
	env:
	SYMFONY_REQUIRE: ${{ matrix.symfony }}

	- name: Update project dependencies lowest
	if: matrix.dependency == 'lowest'
	run: composer update --no-progress --ansi --prefer-stable --prefer-lowest
	env:
	SYMFONY_REQUIRE: ${{ matrix.symfony }}

	- name: Validate composer
	run: composer validate --strict --no-check-lock

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

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