⬆️ Update react/promise requirement from ^2.9 to ^3.1

Updates the requirements on [react/promise](https://github.com/reactphp/promise) to permit the latest version.
- [Release notes](https://github.com/reactphp/promise/releases)
- [Changelog](https://github.com/reactphp/promise/blob/3.x/CHANGELOG.md)
- [Commits](reactphp/promise@v2.9.0...v3.1.0)

---
updated-dependencies:
- dependency-name: react/promise
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

composer.json

@@ -31,7 +31,7 @@
         "monolog/monolog": "^3.2",
         "ramsey/uuid": "^4.4",
         "react/event-loop": "^1.3",
-        "react/promise": "^2.9",
+        "react/promise": "^3.1",
         "rtckit/esl": "^0.8",
         "rtckit/react-esl": "^0.8",
         "rtckit/sip": "^0.7",