ci(tests): fix phpunit run

Author: zlodes

.github/workflows/continuous-integration.yml

@@ -126,10 +126,8 @@ jobs:
         env:
           XDEBUG_MODE: coverage
         with:
-          bootstrap: vendor/autoload.php
-          configuration: phpunit.xml
           php_extensions: xdebug
-          args: tests --coverage-clover ./vendor/coverage.xml
+        run: ./vendor/bin/phpunit --coverage-clover ./vendor/coverage.xml
 
       - name: Upload to Codecov
         uses: codecov/codecov-action@v2