Update composer.json

Author: Shelamkoff

composer.json

@@ -8,7 +8,7 @@
         "files": ["src/functions.php"]
   },
   "require": {
-    "php": "^7.4 || ~8.0.0",
+    "php": "^7.4 || ^8.0 || ^8.1",
     "psr/container": "^1.1.1"
   }
 }