Allow Symfony 6

Author: derrabus

composer.json

@@ -38,10 +38,10 @@
         "nyholm/psr7": "^1.0",
         "php-http/httplug": "^1.0|^2.0",
         "psr/http-client": "^1.0",
-        "symfony/dependency-injection": "^4.4|^5.0",
-        "symfony/http-kernel": "^4.4.13|^5.1.5",
-        "symfony/process": "^4.4|^5.0",
-        "symfony/stopwatch": "^4.4|^5.0"
+        "symfony/dependency-injection": "^4.4|^5.0|^6.0",
+        "symfony/http-kernel": "^4.4.13|^5.1.5|^6.0",
+        "symfony/process": "^4.4|^5.0|^6.0",
+        "symfony/stopwatch": "^4.4|^5.0|^6.0"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\HttpClient\\": "" },