Use new icons

src/app/components/ChatMenu.svelte

@@ -1,4 +1,6 @@
 <script lang="ts">
+  import ChatSquare from "@assets/icons/chat-square.svg?dataurl"
+  import Check from "@assets/icons/check.svg?dataurl"
   import Icon from "@lib/components/Icon.svelte"
   import Button from "@lib/components/Button.svelte"
   import ChatStart from "@app/components/ChatStart.svelte"
@@ -15,11 +17,11 @@
 
 <div class="col-2">
   <Button class="btn btn-primary" onclick={startChat}>
-    <Icon size={4} icon="add-circle" />
+    <Icon size={5} icon={ChatSquare} />
     Start chat
   </Button>
   <Button class="btn btn-neutral" onclick={markAsRead}>
-    <Icon size={4} icon="check-circle" />
+    <Icon size={5} icon={Check} />
     Mark all read
   </Button>
 </div>