Support symfony 7 (#19)

For Drupal 11

Author: acbramley

composer.json

@@ -16,7 +16,7 @@
   "require": {
     "php": "^7.4||^8.0",
     "phpunit/phpunit": "^9.5",
-    "symfony/console": "^3.4||^4.4||^5||^6"
+    "symfony/console": "^3.4||^4.4||^5||^6||^7"
   },
   "require-dev": {
     "dealerdirect/phpcodesniffer-composer-installer": "^0.7.1",