Bump PHP dependency to ^8.1

Author: GuySartorelli

composer.json

@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": "^7.4 || ^8.0",
+        "php": "^8.1",
         "doctrine/inflector": "^1.0 || ^2.0",
         "ext-json": "*",
         "composer/metadata-minifier": "^1.0",