Move development dependencies to require-dev

Author: arokettu

composer.json

@@ -31,14 +31,14 @@
         "php-http/discovery": "^1.6",
         "psr/http-factory": "^1.0.2",
         "php-http/client-implementation": "^1.0",
-        "psr/simple-cache": "^1.0 || ^2.0 || ^3.0",
-        "symfony/http-client": "^5.4 || ^6.4",
-        "php-http/message-factory": "^1.1"
+        "psr/simple-cache": "^1.0 || ^2.0 || ^3.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7 || ^8 || ^9.4",
         "php-http/message": "^1.7",
         "php-http/mock-client": "^1.0",
+        "php-http/message-factory": "^1.1",
+        "symfony/http-client": "^5.4 || ^6.4",
         "nyholm/psr7": "^1.0"
     },
     "scripts": {