Telephone validate number but allow international + sign

In our checkout_index_index.xml file we use the following code.
This works well to validate if the input is a number, but it does not allow the international sign + followed by the country code. How can we allow the + sign also as a valid number input.

CODE:

<item name="telephone" xsi:type="array">
    <item name="sortOrder" xsi:type="string">500</item>
        <item name="validation" xsi:type="array">
            <item name="validate-number" xsi:type="number">0</item>
            <item name="min_text_length" xsi:type="number">10</item>
            <item name="max_text_length" xsi:type="number">12</item>
        </item>
</item>