Add Custom Validation Rule in existing street field of shipping address form Checkout Magento 2?

Basically I am trying to add custom validation rule in existing street field of shipping address form Checkout in magento 2 where pobox should not be allowed. I tried using mixin with requirejs-config.js which works well as it gets called till (console.log(hello)) but I am not sure why my ‘validate-street-part‘ is not getting called from layoutprocessor and adding ‘validate-street-part‘ to (mage/validation.js). Any advise or suggestion would be appreciated.

appdesignfrontendVendorMagento_Checkoutwebjspobox-mixin.js

define([
    'jquery',
    'jquery/ui',
    'jquery/validate',
   'mage/translate'
], function ($) {
    "use strict";

    return function () {
        console.log("hello");
        $.validator.addMethod(
            'validate-street-part',
            function (v) {
                var pattern = /^([post]*)$/.test(v);
                console.log(pattern);
                if(!pattern){ 
                    console.log("return true");
                    return true;
                }else{
                    console.log("return false");
                    return false; 
                }
            },
            $.mage.__("Please note that we cannot ship to PO Boxes. Please enter a physical address.")
        );
    };
});

appdesignfrontendVendorMagento_Checkoutrequirejs-config.js

var config = {
    config: {
        mixins: {
'mage/validation': {
                'Magento_Checkout/js/pobox-mixin' : true
            }
        }
    }
};

appcodeVendorCheckoutetcdi.xml

< ?xml version="1.0"?>



 
        
    

appcodeVendorCheckoutBlockCheckoutLayoutProcessor.php

< ?php
namespace VendorCheckoutBlockCheckout;

class LayoutProcessor
{

    public function afterProcess(
        MagentoCheckoutBlockCheckoutLayoutProcessor $subject,
        array  $jsLayout
    ) {

        $jsLayout['components']['checkout']['children']['steps']['children']['shipping-step']['children']
        ['shippingAddress']['children']['shipping-address-fieldset']['children']['street']['validation']['validate-street-part'] = 1;

return $jsLayout;
    }
}