Replace all material-icons with material-symbols

components/tables/ebook/EbookFilesTable.vue

@@ -7,7 +7,7 @@
       </div>
       <div class="flex-grow" />
       <div class="h-10 w-10 rounded-full flex justify-center items-center duration-500" :class="showFiles ? 'transform rotate-180' : ''">
-        <span class="material-icons text-3xl">expand_more</span>
+        <span class="material-symbols text-3xl">arrow_drop_down</span>
       </div>
     </div>
     <transition name="slide">
@@ -96,4 +96,4 @@ export default {
   },
   mounted() {}
 }
-</script>
+</script>