Round WooCommerce shipping rates to upper close 0.05 (for Swiss franc)

functions.php

<?php 
// Paste everything below this line to your theme's functions.php file.

add_filter('woocommerce_package_rates', 'round_shipping_price_for_swiss_franc');

function round_shipping_price_for_swiss_franc($rates)
{
    if (is_array($rates)) {
        foreach ($rates as $rate) {
            $rate->cost = ceil($rate->cost / 0.05) * 0.05;
        }
    }

    return $rates;
}