tabler/core/pages/_includes/layout/navbar-toggler.html

<button class="navbar-toggler" type="button" data-bs-toggle="collapse"{% if include.target %} data-bs-target="#{{ include.target }}" aria-controls="{{ include.target }}"{% endif %} aria-expanded="false" aria-label="Toggle navigation">
	<span class="navbar-toggler-icon"></span>
</button>