Update a workflow file for GitHub Actions to set up PHP with no coverage driver

Author: matsuo

.github/workflows/php.yml

@@ -29,7 +29,7 @@ jobs:
         uses: shivammathur/setup-php@c541c155eee45413f5b09a52248675b1a2575231 # v2.31.1
         with:
           php-version: ${{ matrix.php-version }}
-          coverage: pcov
+          coverage: none
           extensions: ${{ env.PHP_EXTENSIONS }}
 
       - name: Prepare environment