Add intl extension

Author: joanhey

.github/workflows/test.yml

@@ -16,7 +16,7 @@ jobs:
       uses: shivammathur/setup-php@v2
       with:
         php-version: 8.2
-        extensions: dom, curl, libxml, mbstring, zip, pcntl, ctype, iconv
+        extensions: dom, curl, libxml, mbstring, zip, pcntl, ctype, iconv, intl
         coverage: none
 
     - name: Install Apache mod_php