add php 8.4 build

.github/workflows/ci-8.4.yml

@@ -0,0 +1,48 @@
+name: CI-8.4
+
+on: [push]
+
+env:
+  ACTION_PHP_VERSION: 8.4
+  ACTION_PHP_EXTENSIONS: zip
+
+jobs:
+  build-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Cache Composer dependencies
+        uses: actions/cache@v4
+        with:
+          path: /tmp/composer-cache
+          key: ${{ runner.os }}-${{ hashFiles('**/composer.lock') }}
+
+      - name: Composer install
+        uses: php-actions/composer@v6
+        with:
+          php_version: 8.4
+          php_extensions: zip gd
+
+      - name: PHPUnit
+        uses: php-actions/phpunit@v4
+        with:
+          bootstrap: vendor/autoload.php
+          php_version: 8.4
+          configuration: phpunit.xml.dist
+          php_extensions: zip gd
+          test_suffix: Test.php
+
+      - name: PHPStan
+        uses: php-actions/phpstan@v3
+        with:
+          php_version: 8.4
+          path: src/
+
+      - name: PHP Code Sniffer
+        uses: php-actions/phpcs@v1
+        with:
+          php_version: 8.4
+          path: src/
+          standard: phpcs.xml.dist