update php version to 8.5 in i18n workflow

Author: tobimori

.github/workflows/i18n.yml

@@ -17,7 +17,7 @@ jobs:
       - name: setup php
         uses: shivammathur/setup-php@v2
         with:
-          php-version: "8.4"
+          php-version: "8.5"
           extensions: mbstring, xml, ctype, iconv, intl, pdo_sqlite, dom
           coverage: none
           tools: composer:v2