fix php version

Author: MatteoMiotello

composer.json

@@ -22,7 +22,7 @@
     ],
     "require": {
         "guzzlehttp/guzzle": "^7.5",
-        "php": "^7.4",
+        "php": "^7.4 || ^8.0",
 	    "ext-json": "*"
     }
 }