Reverted to using getenv instead of $_ENV

Author: bensherred

src/Syntax/SteamApi/Client.php

@@ -288,7 +288,7 @@ protected function getApiKey()
             throw new Exceptions\InvalidApiKeyException();
         }
         if (is_null($apiKey) || $apiKey == '' || $apiKey == []) {
-            $apiKey = $_ENV['apiKey'];
+            $apiKey = getenv('apiKey');
         }
 
         return $apiKey;

tests/BaseTester.php

@@ -34,7 +34,7 @@ protected function setUp(): void
 
         // Use .env when available
         if (file_exists($root . '/.env')) {
-            $dotenv = Dotenv::createImmutable($root);
+            $dotenv = Dotenv::createUnsafeImmutable($root);
             $dotenv->load();
         }