fix date string for first day of month #42

	name: Build, Test and Lint

	on: [ push, pull_request ]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Setup PHP
	id: setup-php
	uses: shivammathur/setup-php@v2
	with:
	php-version: 'highest'

	# Configure Composer to use GitHub action cache
	- name: Get Composer Cache Directory
	id: composer-cache
	run: \|
	echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
	- uses: actions/cache@v4
	with:
	path: ${{ steps.composer-cache.outputs.dir }}
	key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
	restore-keys: \|
	${{ runner.os }}-composer-

	- name: Validate composer.json and composer.lock
	run: composer validate

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

	- name: Run PHPUnit
	run: composer run-script test

	- name: Run PHPCS
	run: composer run-script lint

	- name: Install NPM dependencies
	run: npm ci

	- name: Run lint
	run: npm run lint

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