Build coverage with 8.4

Author: arokettu

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
           php_version: '8.2'
       - uses: php-actions/phpunit@v4
         with:
-          php_version: '8.2'
+          php_version: '8.4'
           php_extensions: 'xdebug bcmath'
           bootstrap: 'vendor/autoload.php'
           coverage_clover: 'clover.xml'