fix(ui5-carousel): add missing icon imports (#1365)

Author: fifoosid

packages/main/src/Carousel.js

@@ -20,6 +20,9 @@ import {
 } from "./generated/i18n/i18n-defaults.js";
 import CarouselArrowsPlacement from "./types/CarouselArrowsPlacement.js";
 import CarouselTemplate from "./generated/templates/CarouselTemplate.lit.js";
+import "@ui5/webcomponents-icons/dist/icons/slim-arrow-left.js";
+import "@ui5/webcomponents-icons/dist/icons/slim-arrow-right.js";
+
 import Button from "./Button.js";
 
 // Styles