Bump GrumPHP to latest version

Author: benr77

composer.json

@@ -18,10 +18,10 @@
     "minimum-stability": "stable",
     "require": {
         "php": ">7.4",
-        "phpro/grumphp": "^1.10",
-        "symfony/options-resolver": "~5.3 || ~6.0",
-        "symfony/http-client": "~5.3 || ~6.0",
-        "symfony/serializer": "~5.3 || ~6.0"
+        "phpro/grumphp": "^2.3",
+        "symfony/options-resolver": "~5.3 || ~6.0 || ~7.0",
+        "symfony/http-client": "~5.3 || ~6.0 || ~7.0",
+        "symfony/serializer": "~5.3 || ~6.0 || ~7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.0 || ^9.0",