Lock react/promise to v2

Author: SQKo

composer.json

@@ -18,7 +18,8 @@
     "require": {
         "php": "^7.4|^8.0",
         "react/http": "^1.2",
-        "psr/log": "^1.1 || ^2.0 || ^3.0"
+        "psr/log": "^1.1 || ^2.0 || ^3.0",
+        "react/promise": "^2.2"
     },
     "suggest": {
         "guzzlehttp/guzzle": "For alternative to ReactPHP/Http Browser"