Add support for Symfony 6

Author: stof

composer.json

@@ -12,18 +12,18 @@
     ],
     "require": {
         "php": ">=7.4",
-        "symfony/asset": "^3.4.36 || ^4.4.13 || ^5.3",
-        "symfony/cache": "^3.4.36 || ^4.4.13 || ^5.3",
-        "symfony/config": "^3.4.36 || ^4.4 || ^5.3",
-        "symfony/dependency-injection": "^3.4.36 || ^4.4.13 || ^5.3",
-        "symfony/finder": "^3.4.36 || ^4.4.13 || ^5.3",
-        "symfony/framework-bundle": "^3.4.36 || ^4.3.13 || ^5.3",
-        "symfony/http-kernel": "^3.4.36 || ^4.4.13 || ^5.3"
+        "symfony/asset": "^3.4.36 || ^4.4.13 || ^5.3 || ^6.0",
+        "symfony/cache": "^3.4.36 || ^4.4.13 || ^5.3 || ^6.0",
+        "symfony/config": "^3.4.36 || ^4.4 || ^5.3 || ^6.0",
+        "symfony/dependency-injection": "^3.4.36 || ^4.4.13 || ^5.3 || ^6.0",
+        "symfony/finder": "^3.4.36 || ^4.4.13 || ^5.3 || ^6.0",
+        "symfony/framework-bundle": "^3.4.36 || ^4.3.13 || ^5.3 || ^6.0",
+        "symfony/http-kernel": "^3.4.36 || ^4.4.13 || ^5.3 || ^6.0"
     },
     "require-dev": {
         "phpspec/prophecy-phpunit": "^2.0",
         "phpunit/phpunit": "^9.5",
-        "symfony/phpunit-bridge": "^5.3"
+        "symfony/phpunit-bridge": "^5.3 || ^6.0"
     },
     "autoload": {
         "psr-4": {