Explicitly require PHP ^8.1 (#2574)

Allows to use PHP 8.1 feature without relying on the transient dependency from laravel 10

Author: GromNaN

composer.json

@@ -19,6 +19,7 @@
     ],
     "license": "MIT",
     "require": {
+        "php": "^8.1",
         "ext-mongodb": "^1.15",
         "illuminate/support": "^10.0",
         "illuminate/container": "^10.0",