Allow symfony/dotenv v7

Author: tg666

composer.json

@@ -14,7 +14,7 @@
 		"php": "^7.4 || ^8.0",
 		"ext-json": "*",
 		"composer-plugin-api": "^1.1 || ^2.0",
-		"symfony/dotenv": "^5.4.5 || ^6.0"
+		"symfony/dotenv": "^5.4.5 || ^6.0 || ^7.0"
 	},
 	"require-dev": {
 		"composer/composer": "^1.10 || ^2.0",