Allow for latest symfony components

Author: jakzal

composer.json

@@ -9,9 +9,9 @@
         "zalas/injector": "^2.0"
     },
     "require-dev": {
-        "symfony/config": "^4.4.12 || ^5.3 || ^6.0",
-        "symfony/dependency-injection": "^4.4.12 || ^5.3 || ^6.0",
-        "symfony/http-kernel": "^4.4.12 || ^5.3 || ^6.0",
+        "symfony/config": "^4.4.12 || ^5.3 || ^6.0 || ^7.0",
+        "symfony/dependency-injection": "^4.4.12 || ^5.3 || ^6.0 || ^7.0",
+        "symfony/http-kernel": "^4.4.12 || ^5.3 || ^6.0 || ^7.0",
         "zalas/phpunit-globals": "^2.0 || ^3.0",
         "symfony/framework-bundle": "^4.4.12 || ^5.3 || ^6.0",
         "zalas/phpunit-doubles": "^1.9.2",