feature: allow psr/http-message v2

Signed-off-by: Maximilian Bösing <2189546+boesing@users.noreply.github.com>

Author: boesing

composer.json

@@ -16,14 +16,14 @@
     "require": {
         "php": "^7.2 || ^8.0",
         "phpunit/phpunit": "^8.0 || ^9.3",
-        "psr/http-message": "^1.0"
+        "psr/http-message": "^1.0 || ^2.0"
     },
     "require-dev": {
         "guzzlehttp/psr7": "^1.7 || ^2.0",
         "laminas/laminas-diactoros": "^2.1",
         "nyholm/psr7": "^1.0",
         "ringcentral/psr7": "^1.2",
-        "slim/psr7": "dev-master"
+        "slim/psr7": "^1.4"
     },
     "extra": {
         "branch-alias": {