add aria label to cog button in connections tab in settings modal

src/lib/components/chat/Settings/Connections/Connection.svelte

@@ -83,6 +83,7 @@
 	<div class="flex gap-1">
 		<Tooltip content={$i18n.t('Configure')} className="self-start">
 			<button
+				aria-label={$i18n.t('Open modal to configure connection')}
 				class="self-center p-1 bg-transparent hover:bg-gray-100 dark:bg-gray-900 dark:hover:bg-gray-850 rounded-lg transition"
 				on:click={() => {
 					showConfigModal = true;