Merge pull request #4 from andrew-demb/patch-1

📦 Explicitly declare dependency to `psr/http-message`

Author: asp24

composer.json

@@ -13,6 +13,7 @@
         "nyholm/psr7": "^1.3",
         "php-http/httplug": "^2.0",
         "psr/http-client": "^1.0",
+        "psr/http-message": "^1.0",
         "symfony/options-resolver": "^2.6 || ^3.4 || ^4.4 || ^5.0 || ^6.0 || ^7.0"
     },
     "require-dev": {