Magento 2 : How to modify city field html for shipping address on checkout page

VendorNameSpaceModuleetcdi.xml

<type name="MagentoCheckoutBlockCheckoutAttributeMerger">
    <plugin name="customAttributeMerger" type="VendorNameSpaceModulePluginAttributeMergerPlugin"/>
</type>

AttributeMergerPlugin.php VendorNameSpaceModulePlugin

<?php
namespace VendorNameSpaceModulePlugin;

class AttributeMergerPlugin
{
    public function afterMerge(MagentoCheckoutBlockCheckoutAttributeMerger $subject, $result)
    {

        if (array_key_exists('city', $result)) {
            $result['city']['additionalClasses'] = 'cusotom_city';
        }

        return $result;
    }
}

Hope this will help you. thanks

Here is the path where you can edit city text field for New Shipping Address Form which was rendered form XML file:

app/code/Magento/Checkout/view/frontend/layout/checkout_index_index.xml