fix: move composer's ext-gettext PHP module to require-dev key

fix #537

Author: mledoze

composer.json

@@ -23,13 +23,13 @@
     }
   ],
   "require": {
-    "ext-dom": "*",
-    "ext-gettext": "*",
     "php": ">=8.2",
     "symfony/console": "~5.4|~6.4|~7.0",
     "symfony/yaml": "~5.4|~6.4|~7.0"
   },
   "require-dev": {
+    "ext-dom": "*",
+    "ext-gettext": "*",
     "roave/security-advisories": "dev-latest"
   },
   "autoload": {