Update react/child-process

Author: ondrejmirtes

composer.json

@@ -28,7 +28,7 @@
 		"phpstan/phpdoc-parser": "1.29.1",
 		"psr/http-message": "^1.1",
 		"react/async": "^3",
-		"react/child-process": "^0.6.4",
+		"react/child-process": "^0.7",
 		"react/dns": "^1.10",
 		"react/event-loop": "^1.2",
 		"react/http": "^1.1",