doitinpoland.com/wp-content/plugins/sitepress-multilingual-cms/templates/pagination/table-nav-arrow.twig

{% set arrows = {
'first-page':     '«',
'previous-page':  '‹',
'next-page':      '›',
'last-page':      '»'
}
%}

{% if url %}
    <a class="{{ class }}" href="{{ url }}">
        <span class="screen-reader-text">{{ label }}</span><span aria-hidden="true">{{ arrows[ class ] }}</span>
    </a>
{% else %}
    <span class="tablenav-pages-navspan" aria-hidden="true">{{ arrows[ class ] }}</span>
{% endif %}