Update reactphp/promise for PHP 8.5 compatibility

At this moment, nearly every single `composer install` on PHP 8.5 is failing on a deprecation notice coming from the `react/promise` package.

To mitigate this, the ReactPHP team has just released a new version and I'd like to suggest for Composer to update to that version and release a new version of Composer itself to unblock early adopters from testing with PHP 8.5.

Note: other than fixing the deprecation notice, the `3.3.0` release does not contain any user-facing changes.

Ref:
* reactphp/promise#264
* https://github.com/reactphp/promise/releases/tag/v3.3.0
* reactphp/promise@v3.2.0...v3.3.0

Author: jrfnl

composer.json

@@ -37,7 +37,7 @@
         "symfony/filesystem": "^5.4.35 || ^6.3.12 || ^7.0.3",
         "symfony/finder": "^5.4.35 || ^6.3.12 || ^7.0.3",
         "symfony/process": "^5.4.35 || ^6.3.12 || ^7.0.3",
-        "react/promise": "^2.11 || ^3.2",
+        "react/promise": "^2.11 || ^3.3",
         "composer/pcre": "^2.2 || ^3.2",
         "symfony/polyfill-php73": "^1.24",
         "symfony/polyfill-php80": "^1.24",