Try following way:

> app/code/SR/MagentoCommunity/etc/di.xml

    <?xml version="1.0"?>
    <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
        <type name="Magento\Checkout\CustomerData\DefaultItem">
            <plugin name="sr_DefaultItem"
                    type="SR\MagentoCommunity\Plugin\Checkout\CustomerData\DefaultItem" sortOrder="1"/>
        </type>
    </config>

> app/code/SR/MagentoCommunity/Plugin/Checkout/CustomerData/DefaultItem.php

    <?php
    namespace SR\MagentoCommunity\Plugin\Checkout\CustomerData;
    
    
    class DefaultItem
    {
        public function afterGetItemData(
            \Magento\Checkout\CustomerData\DefaultItem $subject,
            $item
        ) {
    
            if (isset($item['options'])) {
                $options = $item['options'];
                foreach ($options as $key => $option) {
                    $item['options'][$key]['value'] = html_entity_decode($option['value']);
                }
            }
            
            return $item;
        }
    }


**Overwrite following template for change render type:**

> vendor/magento/module-checkout/view/frontend/web/template/minicart/item/default.html

Now modify

    <span data-bind="text: option.value"></span>
to

    <span data-bind="html: option.value"></span>

**Output:**
[![enter image description here][1]][1]



**[Update]**

Add following code in **di.xml**

    <type name="Magento\Checkout\Model\DefaultConfigProvider">
        <plugin name="st_config_provider"
                type="SR\MagentoCommunity\Plugin\Checkout\Model\DefaultConfigProvider" sortOrder="1"/>
    </type>


> app/code/SR/MagentoCommunity/Plugin/Checkout/Model/DefaultConfigProvider.php

    <?php
    namespace SR\MagentoCommunity\Plugin\Checkout\Model;
    
    use Magento\Framework\Serialize\Serializer\Json;
    
    class DefaultConfigProvider
    {
        /**
         * @var Json
         */
        private $json;
    
        /**
         * DefaultConfigProvider constructor.
         * @param Json $json
         */
        public function __construct(
            Json $json
        ) {
            $this->json = $json;
        }
    
        public function afterGetConfig(
            \Magento\Checkout\Model\DefaultConfigProvider $subject,
            array $result
        ) {
    
            $items = $result['totalsData']['items'];
            foreach ($items as $index => $item) {
                if (isset($item['options'])) {
                    $options = $this->json->unserialize($item['options']);
                    foreach ($options as $key => $option) {
                        if (isset($option['full_view'])) {
                            $options[$key]['full_view'] = html_entity_decode($option['full_view']);
                        }
                    }
                    $item['options'] = $this->json->serialize($options);
                    $result['totalsData']['items'][$index] = $item;
                }
            }
    
            return $result;
        }
    }

  [1]: https://i.sstatic.net/vLlzd.png