Allow phpdocumentor/reflection-docblock ^6.0

Author: tacman

composer.json

@@ -22,7 +22,7 @@
     "ext-fileinfo": "*",
     "opis/json-schema": "^2.4",
     "php-http/discovery": "^1.20",
-    "phpdocumentor/reflection-docblock": "^5.6",
+    "phpdocumentor/reflection-docblock": "^5.6|^6.0",
     "psr/clock": "^1.0",
     "psr/container": "^1.0 || ^2.0",
     "psr/event-dispatcher": "^1.0",