Update connection provider to use IPv4

Author: lganzzzo

src/AppComponent.hpp

@@ -33,7 +33,7 @@ class AppComponent {
    */
   OATPP_CREATE_COMPONENT(std::shared_ptr<oatpp::network::ServerConnectionProvider>, serverConnectionProvider)([] {
     /* non_blocking connections should be used with AsyncHttpConnectionHandler for AsyncIO */
-    return oatpp::network::tcp::server::ConnectionProvider::createShared({"localhost", 8000});
+    return oatpp::network::tcp::server::ConnectionProvider::createShared({"0.0.0.0", 8000, oatpp::network::Address::IP_4});
   }());
 
   /**