ci: Update phpunit github action

Signed-off-by: Julius Härtl <jus@bitgrid.net>

.github/workflows/phpunit.yml

@@ -75,6 +75,7 @@ jobs:
           php-version: ${{ matrix.php-versions }}
           tools: phpunit
           extensions: zip, gd, mbstring, iconv, fileinfo, intl, sqlite, pdo_sqlite, mysql, pdo_mysql, pgsql, pdo_pgsql
+          ini-file: development
           coverage: none
 
       - name: Set up PHPUnit