MAPG-199 fix issues found by PHPStan

src/Interfaces/Http/IRequest.php

@@ -10,9 +10,9 @@ interface IRequest
 
     public function setMethod(int $method): void;
 
-    public function setQuery($query);
+    public function setQuery($query): void;
 
-    public function setHeaders(array $headers);
+    public function setHeaders(array $headers): void;
 
     public function send(): IResponse;
 }