Update composer to allow this library to be used with any PHP 8.x release.

While a minor version might introduce a warning (as was the case with
8.4), I feel it is very unlikely there will be a breaking change in 8.x.

Author: AllanJard

composer.json

@@ -3,7 +3,7 @@
 	"description": "PHP server-side libraries for Editor",
 	"type": "library",
 	"require": {
-		"php": ">=5.4.0 <8.4"
+		"php": ">=5.4.0 <9"
 	},
 	"keywords": ["DataTables","jQuery","Editor"],
 	"homepage": "https://editor.datatables.net",