do not use `set-output` in github actions #295

	name: Static analysis

	on:
	pull_request:
	push:
	branches-ignore: [master]

	jobs:
	psalm:
	name: Psalm — PHP ${{ matrix.php }}

	runs-on: ubuntu-latest
	strategy:
	matrix:
	php: ['8.1', '8.3']

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

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

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

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

	- name: Psalm cache
	uses: actions/cache@v4
	with:
	path: .cache/psalm
	key: psalm-${{ github.sha }}
	restore-keys: psalm-

	- name: Install Composer dependencies
	run: composer install

	- name: Run Psalm
	run: vendor/bin/psalm --output-format=github --no-progress

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