Merge pull request #76 from yoshz/feature/symfony6

Added symfony/options-resolver 6.0

Author: dbu

composer.json

@@ -22,7 +22,7 @@
         "php-http/message": "^1.2",
         "psr/http-client": "^1.0",
         "psr/http-factory": "^1.0",
-        "symfony/options-resolver": "^3.4 || ^4.0 || ^5.0"
+        "symfony/options-resolver": "^3.4 || ^4.0 || ^5.0 || ^6.0"
     },
     "require-dev": {
         "guzzlehttp/psr7": "^1.0",
@@ -54,4 +54,4 @@
             "dev-master": "2.x-dev"
         }
     }
-}
+}