github-actions(deps): bump shivammathur/setup-php from 2.21.0 to 2.21.1

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@2.21.0
+        uses: shivammathur/setup-php@2.21.1
         with:
           php-version: ${{ matrix.php }}
           extensions: mbstring, intl, json, zip