Update phpbb4 version constraints

Signed-off-by: Matt Friedman <maf675@gmail.com>

Author: iMattPro

composer.json

@@ -30,7 +30,7 @@
 		}
 	],
 	"require": {
-		"php": ">=7.1.3",
+		"php": ">=8.1",
 		"composer/installers": "~1.0"
 	},
 	"require-dev": {
@@ -39,7 +39,7 @@
 	"extra": {
 		"display-name": "phpBB Media Embed PlugIn",
 		"soft-require": {
-			"phpbb/phpbb": ">=3.3.2"
+			"phpbb/phpbb": ">=4.0.0@dev"
 		},
 		"version-check": {
 			"host": "www.phpbb.com",

ext.php

@@ -14,10 +14,9 @@ class ext extends \phpbb\extension\base
 {
 	/**
 	 * @var string Minimum requirements:
-	 * phpBB 3.3.2 because using role_exists in migrations
-	 * phpBB 3.3.2 because TextFormatter 2.7.5 supports clyp.it and codepen.com
+	 * phpBB 4.0.0 because using Icon())
 	 */
-	public const PHPBB_MINIMUM = '3.3.2';
+	public const PHPBB_MINIMUM = '4.0.0-dev';
 
 	/**
 	 * @var string YAML file extension