README.md: Remove OpenCollective as no funds are needed nor given #2

	---
	name: PHPUnit
	on:
	push:

	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	php_version:
	- "8.2"
	- "8.1"
	- "8.0"
	- "7.4"
	- "7.3"
	- "7.2"
	- "7.1"
	steps:
	- uses: actions/checkout@v3
	- uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php_version }}
	env:
	COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	- name: Get composer cache directory
	id: composer-cache
	run: echo "::set-output name=dir::$(composer config cache-files-dir)"
	- name: Cache composer dependencies
	uses: actions/cache@v2
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
	restore-keys: ${{ runner.os }}-composer-
	- name: Update PHPUnit
	run: composer require phpunit/phpunit --dev -W
	- name: Install dependencies
	run: composer update
	- name: Validate dependencies
	run: composer validate
	- name: Run tests
	run: vendor/bin/phpunit --configuration tests/phpunit.xml

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