Bump actions/cache from 2 to 4 #55

	name: PHP Lints

	on:
	push:
	branches:
	- master
	- release/*
	pull_request:

	jobs:
	lint-php:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2

	- name: Setup PHP
	uses: shivammathur/setup-php@v2
	with:
	php-version: '7.4'
	coverage: none
	tools: composer, cs2pr

	- name: Get Composer cache directory
	id: composer-cache
	run: echo "::set-output name=dir::$(composer config cache-files-dir)"

	- name: Setup Composer cache
	uses: pat-s/always-upload-cache@v2.1.3
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
	restore-keys: \|
	${{ runner.os }}-composer-
	${{ runner.os }}-

	- name: Validate composer.json
	run: composer --no-interaction validate --no-check-all

	- name: Install dependencies
	run: composer install --prefer-dist --no-suggest --no-progress --no-interaction

	- name: Detect coding standard violations (PHPCS)
	run: vendor/bin/phpcs -q --report=checkstyle --runtime-set ignore_errors_on_exit 1 --runtime-set ignore_warnings_on_exit 1 \| cs2pr --graceful-warnings

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