Replace Zend dependency with Laminas

Author: Maks3w

composer.json

@@ -15,9 +15,9 @@
         "php": ">= 7.1",
         "ext-json": "*",
         "justinrainbow/json-schema": "^5",
+        "laminas/laminas-http": "^2.11",
         "phpunit/phpunit": "^7.5||^8.0||^9.0",
-        "rize/uri-template": "^0.3.0",
-        "zendframework/zend-http": "2.5 - 3"
+        "rize/uri-template": "^0.3.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^2.0",

src/PhpUnit/AssertsTrait.php

@@ -6,8 +6,8 @@
 
 use FR3D\SwaggerAssertions\SchemaManager;
 use JsonSchema\Validator;
+use Laminas\Http\Header\ContentType;
 use PHPUnit\Framework\Assert;
-use Zend\Http\Header\ContentType;
 
 /**
  * Facade functions for interact with raw constraints.