Update aura/session requirement from ^2.1 to ^4.0

Updates the requirements on [aura/session](https://github.com/auraphp/Aura.Session) to permit the latest version.
- [Release notes](https://github.com/auraphp/Aura.Session/releases)
- [Changelog](https://github.com/auraphp/Aura.Session/blob/4.x/CHANGELOG.md)
- [Commits](auraphp/Aura.Session@2.1.0...4.0.0)

---
updated-dependencies:
- dependency-name: aura/session
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -9,7 +9,7 @@
     "require": {
         "php": "^7.2 || ^8.0",
         "ray/di": "^2.5.3",
-        "aura/session": "^2.1",
+        "aura/session": "^4.0",
         "ircmaxell/random-lib": "^1.1"
     },
     "require-dev": {