laravel-6 support

vendor/phpunit/php-token-stream/composer.json

@@ -16,13 +16,16 @@
     },
     "prefer-stable": true,
     "require": {
-        "php": ">=7.1",
+        "php": "^7.3 || ^8.0",
         "ext-tokenizer": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.0"
+        "phpunit/phpunit": "^9.0"
     },
     "config": {
+        "platform": {
+            "php": "7.3.0"
+        },
         "optimize-autoloader": true,
         "sort-packages": true
     },
@@ -33,7 +36,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "3.1-dev"
+            "dev-master": "4.0-dev"
         }
     }
 }