Update nyholm/psr7-server requirement from ^0.3.0 to ^0.3.0 || ^0.4.0

Updates the requirements on [nyholm/psr7-server](https://github.com/Nyholm/psr7-server) to permit the latest version.
- [Release notes](https://github.com/Nyholm/psr7-server/releases)
- [Changelog](https://github.com/Nyholm/psr7-server/blob/master/CHANGELOG.md)
- [Commits](Nyholm/psr7-server@0.3.0...0.4.1)

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

composer.json

@@ -60,7 +60,7 @@
         "http-interop/http-factory-guzzle": "^1.0",
         "laminas/laminas-diactoros": "^2.1",
         "nyholm/psr7": "^1.1",
-        "nyholm/psr7-server": "^0.3.0",
+        "nyholm/psr7-server": "^0.3.0 || ^0.4.0",
         "phpspec/prophecy": "^1.10",
         "phpstan/phpstan": "^0.11.5",
         "phpunit/phpunit": "^8.5",