build: upgrade php8.3 and GT/Promise

Author: g105b

composer.json

@@ -12,13 +12,13 @@
 	},
 
 	"require": {
-		"php": ">=8.1",
+		"php": ">=8.3",
 		"ext-dom": "*",
 		"ext-curl": "*",
 		"ext-fileinfo": "*",
 		"phpgt/input": "^1.2",
 		"phpgt/typesafegetter": "^1.3",
-		"phpgt/promise": "^2.2",
+		"phpgt/promise": "^2.4",
 		"phpgt/async": "^1.0",
 		"phpgt/json": "^1.2",
 		"phpgt/curl": "^3.1",