Add ext-intl for composer-require-checker

Author: tvdijen

.github/workflows/php.yml

@@ -53,7 +53,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-versions }}
-          extensions: ctype, date, dom, filter, libxml, pcre, spl, xml, xmlreader
+          extensions: ctype, date, dom, filter, intl, libxml, pcre, spl, xml, xmlreader
           tools: composer
           ini-values: error_reporting=E_ALL
           coverage: pcov
@@ -115,7 +115,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-versions }}
-          extensions: ctype, date, dom, filter, libxml, pcre, spl, xml, xmlreader
+          extensions: ctype, date, dom, filter, intl, libxml, pcre, spl, xml, xmlreader
           tools: composer
           ini-values: error_reporting=E_ALL
           coverage: none
@@ -163,7 +163,7 @@ jobs:
           # Should be the higest supported version, so we can use the newest tools
           php-version: '8.5'
           tools: composer, composer-require-checker, composer-unused
-          extensions: ctype, date, dom, filter, libxml, pcre, spl, xml
+          extensions: ctype, date, dom, filter, intl, libxml, pcre, spl, xml
           coverage: none
 
       - name: Setup problem matchers for PHP